docs: v0.34.3 release notes and version bump

Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>
fix: light theme final polish -- sidebar, roles, chips, all interactive elements
2026-04-04 22:12:37 -07:00 · 2026-04-04 22:11:42 -07:00 · 2026-04-04 22:05:50 -07:00 · 2026-04-04 22:00:15 -07:00 · 2026-04-04 21:59:12 -07:00 · 2026-04-04 21:45:23 -07:00
15 changed files with 1020 additions and 83 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,79 @@

 ---

+## [v0.34.3] Light theme final polish
+*April 5, 2026 | 433 tests*
+
+### Bug Fixes
+- **Light theme: sidebar, role labels, chips, and interactive elements all broken.** Session titles were too faint, active session used washed-out gold, pin stars were near-invisible bright yellow, and all hover/border effects used dark-theme white `rgba(255,255,255,.XX)` values invisible on cream. Fixed with 46 scoped `[data-theme="light"]` selector overrides covering session items, role labels, project chips, topbar chips, composer, suggestions, tool cards, cron list, and more. (#105)
+- Active session now uses blue accent (`#2d6fa3`) for strong contrast. Pin stars use deep gold (`#996b15`). Role labels are solid and high contrast.
+
+---
+
+## [v0.34.2] Theme text colors
+*April 5, 2026 | 433 tests*
+
+### Bug Fixes
+- **Light mode text unreadable.** Bold text was hardcoded white (invisible on cream), italic was light purple on cream, inline code had a dark box on a light background. Fixed by introducing 5 new per-theme CSS variables (`--strong`, `--em`, `--code-text`, `--code-inline-bg`, `--pre-text`) defined for every theme. (#102)
+- Also replaced remaining `rgba(255,255,255,.08)` border references with `var(--border)`, and darkened light theme `--code-bg` slightly for better contrast.
+
+---
+
+## [v0.34.1] Theme variable polish
+*April 5, 2026 | 433 tests*
+
+### Bug Fixes
+- **All non-dark themes had broken surfaces, topbar, and dropdowns.** 30+ hardcoded dark-navy rgba/hex values in style.css were stuck on the Dark palette regardless of active theme. Fixed by introducing 7 new CSS variables (`--surface`, `--topbar-bg`, `--main-bg`, `--input-bg`, `--hover-bg`, `--focus-ring`, `--focus-glow`) defined per-theme, replacing every hardcoded reference. (#100)
+
+---
+
+## [v0.34] Sprint 26 -- Pluggable UI Themes
+*April 5, 2026 | 433 tests*
+
+### Features
+- **6 built-in themes.** Dark (default), Light, Slate, Solarized Dark, Monokai,
+  Nord. Defined as CSS variable overrides on `:root[data-theme="name"]` — the
+  entire UI adapts automatically.
+- **Theme picker in Settings.** Dropdown with instant live preview. Changes
+  apply immediately as you click through options.
+- **`/theme` slash command.** `/theme dark`, `/theme light`, etc.
+- **Theme persistence.** Saved server-side in `settings.json` and client-side
+  in `localStorage` for flicker-free loading on page refresh.
+- **Flash prevention.** Inline `<script>` in `<head>` reads localStorage before
+  the stylesheet loads — no flash of the wrong theme.
+- **Custom theme support.** Any theme name is accepted (no enum gate). Create a
+  `:root[data-theme="name"]` CSS block and it works. See `THEMES.md`.
+- **Unsaved changes guard.** Settings panel now tracks dirty state and shows a
+  "You have unsaved changes" bar with Save/Discard buttons when closing with
+  unpersisted changes. Theme preview reverts on discard.
+
+### Architecture
+- `static/style.css`: 6 theme blocks using CSS variable overrides. Light theme
+  includes scrollbar and selection overrides.
+- `static/commands.js`: `/theme` command with validation.
+- `static/panels.js`: Settings dirty tracking, revert-on-discard, unsaved bar.
+- `static/boot.js`: Theme applied from server settings on boot.
+- `api/config.py`: `theme` field in `_SETTINGS_DEFAULTS` (no enum gate).
+- `THEMES.md`: Full documentation for creating custom themes.
+
+### Tests
+- 9 new tests in `test_sprint26.py`: default theme, round-trip persistence for
+  all 6 built-in themes, custom theme acceptance, settings isolation.
+  Total: **433 tests**.
+
+---
+
+## [v0.33] /insights Sync + state.db Bridge Fix
+*April 5, 2026 | 424 tests*
+
+### Features
+- **Opt-in `/insights` sync.** New "Sync usage to /insights" setting (default: off). When enabled, after each turn the WebUI mirrors session token usage, cost, model, and title into `state.db` so `hermes /insights` includes browser session activity. (#92, #93)
+
+### Bug Fixes
+- **state_sync.py correctness fixes.** Three bugs in the initial implementation caught during code review: wrong class name (`HermesState` → `SessionDB`), wrong constructor argument type (`str` → `Path`), wrong title update method (`_execute_write` with bad signature → `set_session_title`). Also fixed a SQLite connection leak (persistent connection opened per call, never closed). (#95)
+
+---
+
 ## [v0.32] Auto-Compaction Handling + /compact Command (Issue #90)
 *April 5, 2026 | 424 tests*

@@ -1141,4 +1214,4 @@ Three-panel layout: sessions sidebar, chat area, workspace panel.

 ---

-*Last updated: v0.32, April 5, 2026 | Tests: 424*
+*Last updated: v0.34, April 5, 2026 | Tests: 433*
--- a/README.md
+++ b/README.md
@@ -314,17 +314,24 @@ across 22 test files.
 - 20MB POST body size limit
 - CDN resources pinned with SRI integrity hashes

+### Themes
+- 6 built-in themes: Dark (default), Light, Slate, Solarized Dark, Monokai, Nord
+- Switch via Settings panel dropdown (instant live preview) or `/theme` command
+- Persists across reloads (server-side in settings.json + localStorage for flicker-free loading)
+- Custom themes: define a `:root[data-theme="name"]` CSS block and it works — see [THEMES.md](THEMES.md)
+
 ### Settings and configuration
- Settings panel (gear icon) -- default model, default workspace, send key preference
+- Settings panel (gear icon) -- default model, default workspace, send key, theme
 - Send key: Enter (default) or Ctrl/Cmd+Enter
 - Show/hide CLI sessions toggle (enabled by default)
 - Token usage display toggle (off by default, also via `/usage` command)
+- Unsaved changes guard -- discard/save prompt when closing with unpersisted changes
 - Cron completion alerts -- toast notifications and unread badge on Tasks tab
 - Background agent error alerts -- banner when a non-active session encounters an error

 ### Slash commands
 - Type `/` in the composer for autocomplete dropdown
- Built-in: `/help`, `/clear`, `/model <name>`, `/workspace <name>`, `/new`, `/usage`
+- Built-in: `/help`, `/clear`, `/model <name>`, `/workspace <name>`, `/new`, `/usage`, `/theme`, `/compact`
 - Arrow keys navigate, Tab/Enter select, Escape closes
 - Unrecognized commands pass through to the agent

@@ -393,6 +400,7 @@ State lives outside the repo at `~/.hermes/webui-mvp/` by default
 - `TESTING.md` -- manual browser test plan and automated coverage reference
 - `CHANGELOG.md` -- release notes per sprint
 - `SPRINTS.md` -- forward sprint plan with CLI + Claude parity targets
+- `THEMES.md` -- theme system documentation, custom theme guide

 ## Repo

--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -3,7 +3,7 @@
 > Goal: Full 1:1 parity with the Hermes CLI experience via a clean dark web UI.
 > Everything you can do from the CLI terminal, you can do from this UI.
 >
-> Last updated: v0.31.2 (April 5, 2026)
+> Last updated: v0.33 (April 5, 2026)
 > Tests: 424 total (424 passing, 0 failures)
 > Source: <repo>/

@@ -40,6 +40,8 @@
 | Sprint 21 | Mobile responsive + Docker | Hamburger sidebar, bottom nav, files slide-over, Docker support (#21, #7) | 415 |
 | Sprint 22 | Multi-profile support | Profile picker, management panel, seamless switching, per-session tracking (#28) | 415 |
 | Sprint 23 | Agentic transparency | Token/cost display, subagent cards, skill picker in cron, skill linked files, workspace tree persistence, timestamp fixes | 424 |
+| v0.32 | Auto-compaction handling | Compression detection, /compact command, real context window indicator | 424 |
+| v0.33 | /insights sync | Opt-in state.db sync so `hermes /insights` includes WebUI sessions | 424 |

 ---

@@ -206,7 +208,8 @@
 - [ ] TTS playback of responses (deferred)
 - [x] Background task cancel (activity bar Cancel button)
 - [ ] Code execution cell (deferred)
- [ ] Desktop application (deferred)
+- [ ] Desktop application (Sprint 25, PLANNED)
+- [ ] Pluggable UI themes -- light, dark, Solarized, Monokai, Nord (Sprint 26, PLANNED)
 - [ ] Extended slash command / skill integration (deferred)
 - [ ] Virtual scroll for large lists (deferred)

--- a/SPRINTS.md
+++ b/SPRINTS.md
@@ -1,6 +1,6 @@
 # Hermes Web UI -- Forward Sprint Plan

-> Current state: v0.32 | 424 tests | Daily driver ready
+> Current state: v0.34 | 433 tests | Daily driver ready
 > This document plans the path from here to two targets:
 >
 > Target A: 1:1 feature parity with the Hermes CLI (everything you can do from the
@@ -75,7 +75,7 @@ heavy agentic work.

 ---

-## Sprint 12 -- Settings Panel + Reliability + Session QoL
+## Sprint 12 -- Settings Panel + Reliability + Session QoL (COMPLETED)

 **Theme:** Persist your preferences, survive network blips, and organize sessions.

@@ -118,7 +118,7 @@ to keep important conversations accessible.

 ---

-## Sprint 13 -- Alerts, Session QoL, Polish
+## Sprint 13 -- Alerts, Session QoL, Polish (COMPLETED)

 **Theme:** Know what Hermes is doing, and small quality-of-life wins.

@@ -511,15 +511,14 @@ single default profile, blocking multi-persona workflows.

 ---

-## Sprint 23 -- Profile/Workspace/Model Coherence (COMPLETED)
+## Sprint 23 -- Agentic Transparency + Context Visibility (COMPLETED)

-**Theme:** Make profiles, workspaces, models, and sessions coherent across
-profile switches.
+**Theme:** Surface what the agent is doing and how much context it's using.

-**Why now:** Sprint 22 added profile switching but five coherence bugs remained:
-the model picker ignored the profile's default, workspaces were a global file,
-DEFAULT_WORKSPACE was a startup singleton, the session list showed all profiles,
-and switchToProfile() didn't refresh workspaces or sessions.
+**Why now:** Users had no visibility into tool call arguments, session token
+usage, or context window fill. Sprint 22 left five coherence bugs in the
+profile/workspace/model flow that also needed closing before the UI felt
+reliable.

 ### Track A: Bugs
 - **Model picker ignores profile on switch.** `populateModelDropdown()` skipped
@@ -611,12 +610,9 @@ the app to others.
  CSS `contain: strict` + IntersectionObserver approach, no library needed.

 ### Track C: Code Quality
- **SPRINTS.md + ROADMAP.md + CHANGELOG.md updated** to reflect Sprint 23
-  completion (agentic transparency) and correct test counts.
- **Remove stale Sprint 23 description** from SPRINTS.md (the "Profile/Workspace
-  coherence" text is from an older plan; Sprint 23 actually shipped agentic
-  transparency features).
- **CHANGELOG entry for v0.29** covering Sprint 23 deliverables.
+- Audit and remove any remaining dead code introduced by Sprint 23 (e.g. `S.lastUsage` assignment in messages.js that nothing reads).
+- Verify tool call args render correctly in settled history cards on session reload.
+- Update test count in all docs to match actual pytest output after sprint merges.

 **Estimated tests:** ~10 new. Target total: ~435.
 **Hermes CLI parity impact:** Low
@@ -897,6 +893,269 @@ genuinely differentiating for an open-source project

 ---

+## Sprint 26 -- Pluggable UI Themes (PLANNED)
+
+**Theme:** Let users choose how the app looks -- light, dark, and custom color
+schemes. One-click switching, persistent preference, zero flicker on load.
+
+**Difficulty: Low-Medium.** The existing CSS is already 100% CSS-variable-driven
+off a single `:root` block. Every color, background, and accent in the entire UI
+is already a variable. Adding themes is mostly a matter of defining alternative
+`:root` overrides and wiring a picker -- not a rewrite. The main engineering
+work is flicker prevention on load and the settings UI.
+
+**Estimated effort:** 1 sprint, ~2 days of implementation. 8-12 new tests.
+
+---
+
+### Why now
+
+The UI ships only one dark theme. Contributors have asked for light mode. Power
+users want to match their terminal colorscheme. This is low-risk, high-value
+polish that makes the app feel more finished and more personal. It's also a
+good precedent-setter: once the theme system exists, community members can
+contribute new themes as a pure CSS addition with no Python changes needed.
+
+---
+
+### Design decisions
+
+**Themes are CSS-variable overrides, not separate stylesheets.** Each theme is
+a named `:root[data-theme="name"]` block. The base stylesheet stays untouched.
+Switching themes sets `document.documentElement.dataset.theme = name` in JS.
+No FOUC (flash of unstyled content), no stylesheet swap latency.
+
+**Theme preference persists server-side in `settings.json`.** Same mechanism
+as `send_key` and `show_token_usage`. The server includes `theme` in the
+`GET /api/settings` response. Boot.js reads it and applies before first paint.
+
+**Flicker prevention.** A tiny inline `<script>` in `<head>` (before the
+stylesheet link) reads `localStorage.getItem('hermes-theme')` and sets
+`document.documentElement.dataset.theme` synchronously. This prevents a
+dark-flash on light-mode users during the round-trip to `/api/settings`.
+The localStorage value is kept in sync whenever the user changes themes.
+
+**No third-party dependencies.** Pure CSS + vanilla JS. No theme library.
+
+---
+
+### Track A: Core theme system
+
+**1. CSS variable blocks in `static/style.css`**
+
+The existing `:root` block becomes the `dark` (default) theme. Add named
+theme blocks immediately after:
+
+```css
+/* ── Default (dark) theme ── already in :root ── */
+
+:root[data-theme="light"] {
+  --bg: #f5f5f7;
+  --sidebar: #e8e8ed;
+  --border: rgba(0,0,0,0.10);
+  --border2: rgba(0,0,0,0.16);
+  --text: #1c1c1e;
+  --muted: #6e6e80;
+  --accent: #c0392b;
+  --blue: #0a6dc2;
+  --gold: #a07a20;
+  --code-bg: #f0f0f5;
+}
+
+:root[data-theme="solarized"] {
+  --bg: #002b36;
+  --sidebar: #073642;
+  --border: rgba(255,255,255,0.08);
+  --border2: rgba(255,255,255,0.13);
+  --text: #839496;
+  --muted: #657b83;
+  --accent: #dc322f;
+  --blue: #268bd2;
+  --gold: #b58900;
+  --code-bg: #073642;
+}
+
+:root[data-theme="monokai"] {
+  --bg: #272822;
+  --sidebar: #1e1f1c;
+  --border: rgba(255,255,255,0.07);
+  --border2: rgba(255,255,255,0.12);
+  --text: #f8f8f2;
+  --muted: #75715e;
+  --accent: #f92672;
+  --blue: #66d9e8;
+  --gold: #e6db74;
+  --code-bg: #1e1f1c;
+}
+
+:root[data-theme="nord"] {
+  --bg: #2e3440;
+  --sidebar: #272c36;
+  --border: rgba(255,255,255,0.07);
+  --border2: rgba(255,255,255,0.12);
+  --text: #eceff4;
+  --muted: #9099aa;
+  --accent: #bf616a;
+  --blue: #81a1c1;
+  --gold: #ebcb8b;
+  --code-bg: #272c36;
+}
+```
+
+Additional theming notes:
+- `syntax-highlight` colors (Prism.js) are theme-independent (they come from the
+  CDN stylesheet) -- acceptable for v1.
+- The logo gradient (`linear-gradient(145deg,#e8a030,var(--accent))`) uses
+  `--accent` already so it adapts automatically.
+- Scrollbar colors and `::selection` backgrounds need explicit overrides in the
+  light theme to avoid dark scrollbars on a light background.
+
+**2. Flicker-prevention inline script in `static/index.html`**
+
+Immediately after `<head>` opens, before the stylesheet `<link>`:
+
+```html
+<script>
+(function(){
+  var t=localStorage.getItem('hermes-theme');
+  if(t && t!=='dark') document.documentElement.dataset.theme=t;
+})();
+</script>
+```
+
+This runs synchronously before the stylesheet parses. Zero flicker.
+
+**3. Theme loading in `static/boot.js`**
+
+In the existing `api('/api/settings')` call, read and apply the theme:
+
+```js
+const s = await api('/api/settings');
+window._sendKey = s.send_key || 'enter';
+window._showTokenUsage = !!s.show_token_usage;
+window._showCliSessions = !!s.show_cli_sessions;
+// Theme: apply server preference, update localStorage for flicker prevention
+const theme = s.theme || 'dark';
+document.documentElement.dataset.theme = theme;
+localStorage.setItem('hermes-theme', theme);
+```
+
+**4. Theme setting in `api/config.py`**
+
+```python
+_SETTINGS_DEFAULTS = {
+    ...
+    'theme': 'dark',  # active UI theme name
+    ...
+}
+_SETTINGS_ALLOWED_KEYS = set(_SETTINGS_DEFAULTS.keys()) - {'password_hash'}
+```
+
+No enum constraint on `theme` -- allows user-defined theme names to work
+without server changes.
+
+---
+
+### Track B: Theme picker UI
+
+**Settings panel addition (`static/index.html` + `static/panels.js`)**
+
+A `<select>` in the Settings panel, below the send-key picker:
+
+```html
+<div class="settings-field">
+  <label for="settingsTheme">Theme</label>
+  <select id="settingsTheme" ...>
+    <option value="dark">Dark (default)</option>
+    <option value="light">Light</option>
+    <option value="solarized">Solarized Dark</option>
+    <option value="monokai">Monokai</option>
+    <option value="nord">Nord</option>
+  </select>
+</div>
+```
+
+In `loadSettingsPanel()`:
+```js
+const themeSel = $('settingsTheme');
+if(themeSel) themeSel.value = settings.theme || 'dark';
+```
+
+In `saveSettings()`:
+```js
+body.theme = $('settingsTheme').value;
+```
+
+**Live preview on select change (no save required):**
+```js
+$('settingsTheme').addEventListener('change', e => {
+  document.documentElement.dataset.theme = e.target.value;
+  localStorage.setItem('hermes-theme', e.target.value);
+});
+```
+
+This gives instant visual feedback as the user clicks through options.
+The full settings save then persists it server-side.
+
+**`/theme` slash command (`static/commands.js`)**
+
+```js
+async function cmdTheme(arg) {
+  const themes = ['dark','light','solarized','monokai','nord'];
+  if(!arg || !themes.includes(arg)) {
+    showToast('Usage: /theme dark|light|solarized|monokai|nord');
+    return;
+  }
+  document.documentElement.dataset.theme = arg;
+  localStorage.setItem('hermes-theme', arg);
+  try { await api('/api/settings', {method:'POST', body: JSON.stringify({theme: arg})}); } catch(e) {}
+  showToast('Theme: ' + arg);
+}
+```
+
+---
+
+### Track C: Tests
+
+New test cases in `tests/test_sprint26.py`:
+
+1. `GET /api/settings` returns `theme: 'dark'` by default
+2. `POST /api/settings` with `{theme: 'light'}` persists and round-trips
+3. `POST /api/settings` with `{theme: 'nord'}` accepts any string (no enum gate)
+4. Theme value survives server restart (reads from `settings.json`)
+5. `/theme` command fires without error for each named theme
+6. `loadSettingsPanel()` populates the select with the current theme value
+7. Settings save includes theme in the POST body
+8. `data-theme` attribute is set on `<html>` before first paint (inline script)
+
+**Estimated new tests:** 8. Target total after sprint: ~443.
+
+---
+
+### What's out of scope
+
+- **Custom color editors** (hex pickers for each variable): saves that for v2.
+  The five shipped themes cover the main use cases. A custom theme can always
+  be added by dropping a CSS block with no code changes.
+- **Per-session themes**: single global preference is the right call for v1.
+- **System `prefers-color-scheme` sync**: nice-to-have, low priority. The
+  flicker-prevention script could be extended to read the media query if no
+  explicit preference is set.
+- **Prism.js theme switching**: the code-block syntax highlighting comes from
+  a CDN stylesheet. Swapping it requires a `<link>` swap and SRI re-check.
+  Defer to a future sprint; the default Prism Tomorrow theme works on all
+  current dark themes and is acceptable on light.
+
+---
+
+**Estimated tests:** 8 new. Target total: ~443.
+**Hermes CLI parity impact:** None
+**Claude parity impact:** Medium (Claude.ai has light/dark/system sync)
+**User-facing value:** High -- first thing many users ask for
+
+---
+
 *Last updated: April 5, 2026*
-*Current version: v0.32 | 424 tests*
+*Current version: v0.34 | 433 tests*
 *Next sprint: Sprint 24 (Web Polish + Bug Fix Pass)*
+*Horizon sprint: Sprint 26 (Pluggable UI Themes)*
--- a/THEMES.md
+++ b/THEMES.md
@@ -0,0 +1,144 @@
+# Hermes Web UI — Themes
+
+Hermes Web UI supports pluggable color themes. Five themes ship built-in, and
+you can create your own with pure CSS — no Python changes needed.
+
+---
+
+## Switching Themes
+
+**Settings panel:** Click the gear icon, select a theme from the dropdown. The
+preview is instant — the UI updates as you click through options.
+
+**Slash command:** Type `/theme dark` or `/theme light` in the composer.
+
+**Themes persist** across page reloads and server restarts (stored in
+`settings.json` server-side, with `localStorage` for flicker-free loading).
+
+---
+
+## Built-in Themes
+
+| Theme | Description |
+|-------|-------------|
+| **Dark** (default) | Deep navy/indigo with muted blue accents. Easy on the eyes for long sessions. |
+| **Light** | Warm off-white with dark text. High contrast for bright environments. |
+| **Slate** | Warm charcoal, lighter than Dark. Easier on the eyes for extended use. |
+| **Solarized Dark** | Ethan Schoonover's classic dark palette. Teal background, warm accents. |
+| **Monokai** | Warm dark theme inspired by the Monokai editor scheme. Green/pink accents. |
+| **Nord** | Arctic blue-gray palette from the Nord color system. Calm and minimal. |
+| **Custom themes** | Any string accepted by `settings.json`, `POST /api/settings`, and `/theme` if added to the picker/command list. Pure CSS variables only. |
+
+---
+
+## Creating a Custom Theme
+
+A theme is a CSS block that overrides the color variables. Add it to
+`static/style.css` (or a separate file that you link after the main stylesheet).
+
+### Step 1: Define your theme block
+
+Every color in the UI comes from these CSS variables:
+
+```css
+:root[data-theme="your-theme-name"] {
+  /* Core palette */
+  --bg: #1a1a2e;          /* Main background */
+  --sidebar: #16213e;      /* Sidebar background */
+  --border: rgba(255,255,255,0.08);   /* Subtle borders */
+  --border2: rgba(255,255,255,0.14);  /* Stronger borders */
+  --text: #e8e8f0;         /* Primary text color */
+  --muted: #8888aa;        /* Secondary/muted text */
+  --accent: #e94560;       /* Accent color (errors, warnings, delete) */
+  --blue: #7cb9ff;         /* Primary action color (links, active states) */
+  --gold: #c9a84c;         /* Secondary accent (pinned items, gold highlights) */
+  --code-bg: #0d1117;      /* Code block background */
+
+  /* Surface and chrome (required for full theme polish) */
+  --surface: #1a2535;      /* Dropdowns, popups, toast, approval card */
+  --topbar-bg: rgba(22,33,62,.98);   /* Topbar background */
+  --main-bg: rgba(26,26,46,0.5);    /* Main chat area background */
+  --input-bg: rgba(255,255,255,.04); /* Input/button subtle backgrounds */
+  --hover-bg: rgba(255,255,255,.06); /* Hover state backgrounds */
+  --focus-ring: rgba(124,185,255,.35); /* Focus border color */
+  --focus-glow: rgba(124,185,255,.08); /* Focus box-shadow glow */
+
+  /* Typography (required for readable text across themes) */
+  --strong: #fff;          /* Bold text in messages */
+  --em: #c9c9e8;           /* Italic text in messages */
+  --code-text: #f0c27f;    /* Inline code text color */
+  --code-inline-bg: rgba(0,0,0,.35); /* Inline code background */
+  --pre-text: #e2e8f0;     /* Code block text color */
+}
+```
+
+The **core palette** controls the overall mood. The **surface/chrome** and
+**typography** variables are part of the standard theme contract — define all
+of them for a complete theme.
+
+For **light themes**, you also need `:root[data-theme="name"]` overrides
+for elements that use `rgba(255,255,255,.XX)` hover/border effects (these
+are invisible on light backgrounds). See the built-in light theme for the
+full pattern — it overrides ~45 selectors for proper dark-on-light contrast
+on hover states, borders, chips, role labels, session items, and
+interactive elements.
+
+### Step 2: Add it to the theme picker (optional)
+
+To make your theme appear in the Settings dropdown, add an `<option>` to the
+theme `<select>` in `static/index.html`:
+
+```html
+<option value="your-theme-name">Your Theme Name</option>
+```
+
+And update the `/theme` command's valid theme list in `static/commands.js`.
+
+### Step 3: Test it
+
+Switch to your theme via `/theme your-theme-name` or the Settings panel.
+Check these areas:
+- Sidebar session list (hover states, active state, project borders)
+- Message bubbles (user vs assistant styling)
+- Code blocks (background contrast, copy button visibility)
+- Tool cards (running indicator, expand/collapse)
+- Settings panel and login page
+- Mobile layout (hamburger sidebar, bottom nav)
+
+### Tips
+
+- **Light themes** need scrollbar and selection overrides, plus the full
+  text/code set (`--strong`, `--em`, `--code-text`, `--code-inline-bg`,
+  `--pre-text`) or they will look broken.
+- The **logo gradient** uses `--accent` automatically, so it adapts to your
+  theme without extra work.
+- **Prism.js syntax highlighting** uses its own CDN stylesheet (Tomorrow theme).
+  It works well on dark themes; on light themes the contrast is acceptable but
+  not perfect. Custom Prism theme support is planned for a future update.
+- **No server changes needed.** The `theme` setting in `settings.json` accepts
+  any string — your custom theme name will persist without code changes.
+
+---
+
+## How Themes Work Internally
+
+1. Each theme is a `:root[data-theme="name"]` CSS block that overrides variables.
+2. Switching themes sets `document.documentElement.dataset.theme = name` in JS.
+3. A tiny inline `<script>` in `<head>` reads `localStorage` before the
+   stylesheet loads — this prevents a flash of the wrong theme on page load.
+4. The theme preference is saved server-side via `POST /api/settings` and
+   loaded on boot via `GET /api/settings`.
+5. The `/theme` command and Settings dropdown both update the DOM, localStorage,
+   and server settings simultaneously.
+
+---
+
+## Contributing a Theme
+
+To contribute a new built-in theme:
+
+1. Add your `:root[data-theme="name"]` block to `static/style.css`
+2. Add the `<option>` to the Settings panel in `static/index.html`
+3. Add the theme name to the valid list in `cmdTheme()` in `static/commands.js`
+4. Test on desktop and mobile
+5. Open a PR — themes are pure CSS additions with no backend changes needed
--- a/api/config.py
+++ b/api/config.py
@@ -652,6 +652,8 @@ _SETTINGS_DEFAULTS = {
    'send_key': 'enter',  # 'enter' or 'ctrl+enter'
    'show_token_usage': False,  # show input/output token badge below assistant messages
    'show_cli_sessions': False,  # merge CLI sessions from state.db into the sidebar
+    'sync_to_insights': False,  # mirror WebUI token usage to state.db for /insights
+    'theme': 'dark',  # active UI theme name (no enum gate -- allows custom themes)
    'password_hash': None,  # SHA-256 hash; None = auth disabled
 }

@@ -671,7 +673,7 @@ _SETTINGS_ALLOWED_KEYS = set(_SETTINGS_DEFAULTS.keys()) - {'password_hash'}
 _SETTINGS_ENUM_VALUES = {
    'send_key': {'enter', 'ctrl+enter'},
 }
-_SETTINGS_BOOL_KEYS = {'show_token_usage', 'show_cli_sessions'}
+_SETTINGS_BOOL_KEYS = {'show_token_usage', 'show_cli_sessions', 'sync_to_insights'}

 def save_settings(settings: dict) -> dict:
    """Save settings to disk. Returns the merged settings. Ignores unknown keys."""
--- a/api/routes.py
+++ b/api/routes.py
@@ -995,6 +995,20 @@ def _handle_chat_sync(handler, body):
        else: os.environ['HERMES_SESSION_KEY'] = old_session_key
    s.messages = result.get('messages') or s.messages
    s.title = title_from(s.messages, s.title); s.save()
+    # Sync to state.db for /insights (opt-in setting)
+    try:
+        if load_settings().get('sync_to_insights'):
+            from api.state_sync import sync_session_usage
+            sync_session_usage(
+                session_id=s.session_id,
+                input_tokens=s.input_tokens or 0,
+                output_tokens=s.output_tokens or 0,
+                estimated_cost=s.estimated_cost,
+                model=s.model,
+                title=s.title,
+            )
+    except Exception:
+        pass
    return j(handler, {
        'answer': result.get('final_response') or '',
        'status': 'done' if result.get('completed', True) else 'partial',
--- a/api/state_sync.py
+++ b/api/state_sync.py
@@ -0,0 +1,101 @@
+"""
+Hermes Web UI -- Optional state.db sync bridge.
+
+Mirrors WebUI session metadata (token usage, title, model) into the
+hermes-agent state.db so that /insights, session lists, and cost
+tracking include WebUI activity.
+
+This is opt-in via the 'sync_to_insights' setting (default: off).
+All operations are wrapped in try/except -- if state.db is unavailable,
+locked, or the schema doesn't match, the WebUI continues normally.
+
+The bridge uses absolute token counts (not deltas) because the WebUI
+Session object already accumulates totals across turns. This avoids
+any double-counting risk.
+"""
+import os
+from pathlib import Path
+
+
+def _get_state_db():
+    """Get a SessionDB instance for the active profile's state.db.
+    Returns None if hermes_state is not importable or DB is unavailable.
+    Each caller is responsible for calling db.close() when done.
+    """
+    try:
+        from hermes_state import SessionDB
+    except ImportError:
+        return None
+
+    try:
+        from api.profiles import get_active_hermes_home
+        hermes_home = Path(get_active_hermes_home()).expanduser().resolve()
+    except Exception:
+        hermes_home = Path(os.getenv('HERMES_HOME', str(Path.home() / '.hermes')))
+
+    db_path = hermes_home / 'state.db'
+    if not db_path.exists():
+        return None
+
+    try:
+        return SessionDB(db_path)
+    except Exception:
+        return None
+
+
+def sync_session_start(session_id, model=None):
+    """Register a WebUI session in state.db (idempotent).
+    Called when a session's first message is sent.
+    """
+    db = _get_state_db()
+    if not db:
+        return
+    try:
+        db.ensure_session(
+            session_id=session_id,
+            source='webui',
+            model=model,
+        )
+    except Exception:
+        pass  # never crash the WebUI for sync failures
+    finally:
+        try:
+            db.close()
+        except Exception:
+            pass
+
+
+def sync_session_usage(session_id, input_tokens=0, output_tokens=0,
+                       estimated_cost=None, model=None, title=None):
+    """Update token usage and title for a WebUI session in state.db.
+    Called after each turn completes. Uses absolute=True to set totals
+    (the WebUI Session already accumulates across turns).
+    """
+    db = _get_state_db()
+    if not db:
+        return
+    try:
+        # Ensure session exists first (idempotent)
+        db.ensure_session(session_id=session_id, source='webui', model=model)
+        # Set absolute token counts
+        db.update_token_counts(
+            session_id=session_id,
+            input_tokens=input_tokens,
+            output_tokens=output_tokens,
+            estimated_cost_usd=estimated_cost,
+            model=model,
+            absolute=True,
+        )
+        # Update title if we have one, using the public API
+        if title:
+            try:
+                db.set_session_title(session_id, title)
+            except Exception:
+                pass
+    except Exception:
+        pass  # never crash the WebUI for sync failures
+    finally:
+        try:
+            db.close()
+        except Exception:
+            pass
--- a/api/streaming.py
+++ b/api/streaming.py
@@ -309,6 +309,21 @@ def _run_agent_streaming(session_id, msg_text, model, workspace, stream_id, atta
                            m['attachments'] = attachments
                            break
            s.save()
+            # Sync to state.db for /insights (opt-in setting)
+            try:
+                from api.config import load_settings as _load_settings
+                if _load_settings().get('sync_to_insights'):
+                    from api.state_sync import sync_session_usage
+                    sync_session_usage(
+                        session_id=s.session_id,
+                        input_tokens=s.input_tokens or 0,
+                        output_tokens=s.output_tokens or 0,
+                        estimated_cost=s.estimated_cost,
+                        model=model,
+                        title=s.title,
+                    )
+            except Exception:
+                pass  # never crash the stream for sync failures
            usage = {'input_tokens': input_tokens, 'output_tokens': output_tokens, 'estimated_cost': estimated_cost}
            # Include context window data from the agent's compressor for the UI indicator
            _cc = getattr(agent, 'context_compressor', None)
--- a/static/boot.js
+++ b/static/boot.js
@@ -226,7 +226,7 @@ document.addEventListener('keydown',async e=>{
  if(e.key==='Escape'){
    // Close settings overlay if open
    const settingsOverlay=$('settingsOverlay');
-    if(settingsOverlay&&settingsOverlay.style.display!=='none'){toggleSettings();return;}
+    if(settingsOverlay&&settingsOverlay.style.display!=='none'){_closeSettingsPanel();return;}
    // Close workspace dropdown
    closeWsDropdown();
    // Clear session search
@@ -308,7 +308,7 @@ document.querySelectorAll('.suggestion').forEach(btn=>{

 (async()=>{
  // Load send key preference
-  try{const s=await api('/api/settings');window._sendKey=s.send_key||'enter';window._showTokenUsage=!!s.show_token_usage;window._showCliSessions=!!s.show_cli_sessions;}catch(e){window._sendKey='enter';window._showTokenUsage=false;window._showCliSessions=false;}
+  try{const s=await api('/api/settings');window._sendKey=s.send_key||'enter';window._showTokenUsage=!!s.show_token_usage;window._showCliSessions=!!s.show_cli_sessions;const _theme=s.theme||'dark';document.documentElement.dataset.theme=_theme;localStorage.setItem('hermes-theme',_theme);}catch(e){window._sendKey='enter';window._showTokenUsage=false;window._showCliSessions=false;}
  // Fetch active profile
  try{const p=await api('/api/profile/active');S.activeProfile=p.name||'default';}catch(e){S.activeProfile='default';}
  // Update profile chip label immediately
--- a/static/commands.js
+++ b/static/commands.js
@@ -10,6 +10,7 @@ const COMMANDS=[
  {name:'workspace', desc:'Switch workspace by name',            fn:cmdWorkspace, arg:'name'},
  {name:'new',       desc:'Start a new chat session',            fn:cmdNew},
  {name:'usage',     desc:'Toggle token usage display on/off',   fn:cmdUsage},
+  {name:'theme',     desc:'Switch theme (dark/light/slate/solarized/monokai/nord)', fn:cmdTheme, arg:'name'},
 ];

 function parseCommand(text){
@@ -122,6 +123,22 @@ async function cmdUsage(){
  showToast('Token usage '+(next?'on':'off'));
 }

+async function cmdTheme(args){
+  const themes=['dark','light','slate','solarized','monokai','nord'];
+  if(!args||!themes.includes(args.toLowerCase())){
+    showToast('Usage: /theme '+themes.join('|'));
+    return;
+  }
+  const t=args.toLowerCase();
+  document.documentElement.dataset.theme=t;
+  localStorage.setItem('hermes-theme',t);
+  try{await api('/api/settings',{method:'POST',body:JSON.stringify({theme:t})});}catch(e){}
+  // Update settings dropdown if panel is open
+  const sel=$('settingsTheme');
+  if(sel)sel.value=t;
+  showToast('Theme: '+t);
+}
+
 // ── Autocomplete dropdown ───────────────────────────────────────────────────

 let _cmdSelectedIdx=-1;
--- a/static/index.html
+++ b/static/index.html
@@ -4,6 +4,7 @@
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>Hermes</title>
+<script>(function(){var t=localStorage.getItem('hermes-theme');if(t&&t!=='dark')document.documentElement.dataset.theme=t;})()</script>
 <link rel="stylesheet" href="/static/style.css">
  <!-- Prism.js syntax highlighting (loaded async, non-blocking) -->
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/themes/prism-tomorrow.min.css" integrity="sha384-wFjoQjtV1y5jVHbt0p35Ui8aV8GVpEZkyF99OXWqP/eNJDU93D3Ugxkoyh6Y2I4A" crossorigin="anonymous">
@@ -13,7 +14,7 @@
 <body>
 <div class="layout">
  <aside class="sidebar">
-    <div class="sidebar-header"><div class="logo">H</div><div><h1 style="margin:0;font-size:15px;font-weight:700;letter-spacing:-.01em">Hermes</h1><div style="font-size:10px;color:var(--muted);opacity:.8;margin-top:1px">v0.32</div></div></div>
+    <div class="sidebar-header"><div class="logo">H</div><div><h1 style="margin:0;font-size:15px;font-weight:700;letter-spacing:-.01em">Hermes</h1><div style="font-size:10px;color:var(--muted);opacity:.8;margin-top:1px">v0.34.3</div></div></div>
    <div class="sidebar-nav">
      <button class="nav-tab active" data-panel="chat" data-label="Chat" onclick="switchPanel('chat')" title="Chat">&#128172;</button>
      <button class="nav-tab" data-panel="tasks" data-label="Tasks" onclick="switchPanel('tasks')" title="Tasks">&#128197;</button>
@@ -311,7 +312,7 @@
  <div class="settings-panel">
    <div class="settings-header">
      <h3 style="margin:0;font-size:16px">Settings</h3>
-      <button class="panel-icon-btn" onclick="toggleSettings()" title="Close">&#10005;</button>
+      <button class="panel-icon-btn" onclick="_closeSettingsPanel()" title="Close">&#10005;</button>
    </div>
    <div class="settings-body">
      <div class="settings-field">
@@ -329,6 +330,17 @@
          <option value="ctrl+enter">Ctrl+Enter (Enter for newline)</option>
        </select>
      </div>
+      <div class="settings-field">
+        <label for="settingsTheme">Theme</label>
+        <select id="settingsTheme" style="width:100%;padding:8px;background:var(--code-bg);color:var(--text);border:1px solid var(--border2);border-radius:6px" onchange="document.documentElement.dataset.theme=this.value;localStorage.setItem('hermes-theme',this.value)">
+          <option value="dark">Dark (default)</option>
+          <option value="light">Light</option>
+          <option value="slate">Slate (charcoal)</option>
+          <option value="solarized">Solarized Dark</option>
+          <option value="monokai">Monokai</option>
+          <option value="nord">Nord</option>
+        </select>
+      </div>
      <div class="settings-field">
        <label style="display:flex;align-items:center;gap:8px;cursor:pointer">
          <input type="checkbox" id="settingsShowTokenUsage" style="width:15px;height:15px;accent-color:var(--accent)">
@@ -343,6 +355,13 @@
        </label>
        <div style="font-size:11px;color:var(--muted);margin-top:4px">Merges sessions from the Hermes CLI (state.db) into the session list. Click a CLI session to import it and continue the conversation.</div>
      </div>
+      <div class="settings-field">
+        <label style="display:flex;align-items:center;gap:8px;cursor:pointer">
+          <input type="checkbox" id="settingsSyncInsights" style="width:15px;height:15px;accent-color:var(--accent)">
+          Sync usage to /insights
+        </label>
+        <div style="font-size:11px;color:var(--muted);margin-top:4px">Mirrors WebUI token usage to state.db so <code>hermes /insights</code> includes browser session data. Off by default.</div>
+      </div>
      <div class="settings-field" style="border-top:1px solid var(--border);padding-top:12px;margin-top:8px">
        <label for="settingsPassword">Access Password</label>
        <div style="font-size:11px;color:var(--muted);margin-bottom:6px">Enter a new password to set or change it. Leave blank to keep current setting.</div>
--- a/static/panels.js
+++ b/static/panels.js
@@ -908,17 +908,70 @@ document.addEventListener('drop',e=>{e.preventDefault();dragCounter=0;wrap.class

 // ── Settings panel ───────────────────────────────────────────────────────────

+let _settingsDirty = false;
+let _settingsThemeOnOpen = null; // track theme at open time for discard revert
+
 function toggleSettings(){
  const overlay=$('settingsOverlay');
  if(!overlay) return;
  if(overlay.style.display==='none'){
+    _settingsDirty = false;
+    _settingsThemeOnOpen = document.documentElement.dataset.theme || 'dark';
    overlay.style.display='';
    loadSettingsPanel();
  } else {
-    overlay.style.display='none';
+    _closeSettingsPanel();
  }
 }

+// Close with unsaved-changes check. If dirty, show a confirm dialog.
+function _closeSettingsPanel(){
+  if(!_settingsDirty){
+    // Nothing changed -- revert any live preview and close
+    _revertSettingsPreview();
+    $('settingsOverlay').style.display='none';
+    return;
+  }
+  // Dirty -- show inline confirm bar
+  _showSettingsUnsavedBar();
+}
+
+// Revert live DOM/localStorage to what they were when the panel opened
+function _revertSettingsPreview(){
+  if(_settingsThemeOnOpen){
+    document.documentElement.dataset.theme = _settingsThemeOnOpen;
+    localStorage.setItem('hermes-theme', _settingsThemeOnOpen);
+  }
+}
+
+// Show the "Unsaved changes" bar inside the settings panel
+function _showSettingsUnsavedBar(){
+  let bar = $('settingsUnsavedBar');
+  if(bar){ bar.style.display=''; return; }
+  // Create it
+  bar = document.createElement('div');
+  bar.id = 'settingsUnsavedBar';
+  bar.style.cssText = 'display:flex;align-items:center;justify-content:space-between;gap:8px;background:rgba(233,69,96,.12);border:1px solid rgba(233,69,96,.3);border-radius:8px;padding:10px 14px;margin:0 0 12px;font-size:13px;';
+  bar.innerHTML = '<span style="color:var(--text)">You have unsaved changes.</span>'
+    + '<span style="display:flex;gap:8px">'
+    + '<button onclick="_discardSettings()" style="padding:5px 12px;border-radius:6px;border:1px solid var(--border2);background:rgba(255,255,255,.06);color:var(--muted);cursor:pointer;font-size:12px;font-weight:600">Discard</button>'
+    + '<button onclick="saveSettings(true)" style="padding:5px 12px;border-radius:6px;border:none;background:var(--accent);color:#fff;cursor:pointer;font-size:12px;font-weight:600">Save</button>'
+    + '</span>';
+  const body = document.querySelector('.settings-body') || document.querySelector('.settings-panel');
+  if(body) body.prepend(bar);
+}
+
+function _discardSettings(){
+  _revertSettingsPreview();
+  _settingsDirty = false;
+  $('settingsOverlay').style.display = 'none';
+}
+
+// Mark settings as dirty whenever anything changes
+function _markSettingsDirty(){
+  _settingsDirty = true;
+}
+
 async function loadSettingsPanel(){
  try{
    const settings=await api('/api/settings');
@@ -940,6 +993,7 @@ async function loadSettingsPanel(){
        }
      }catch(e){}
      modelSel.value=settings.default_model||'';
+      modelSel.addEventListener('change',_markSettingsDirty,{once:false});
    }
    // Populate workspace dropdown from /api/workspaces
    const wsSel=$('settingsWorkspace');
@@ -954,17 +1008,23 @@ async function loadSettingsPanel(){
        }
      }catch(e){}
      wsSel.value=settings.default_workspace||'';
+      wsSel.addEventListener('change',_markSettingsDirty,{once:false});
    }
    // Send key preference
    const sendKeySel=$('settingsSendKey');
-    if(sendKeySel) sendKeySel.value=settings.send_key||'enter';
+    if(sendKeySel){sendKeySel.value=settings.send_key||'enter';sendKeySel.addEventListener('change',_markSettingsDirty,{once:false});}
+    // Theme preference
+    const themeSel=$('settingsTheme');
+    if(themeSel){themeSel.value=settings.theme||'dark';themeSel.addEventListener('change',_markSettingsDirty,{once:false});}
    const showUsageCb=$('settingsShowTokenUsage');
-    if(showUsageCb) showUsageCb.checked=!!settings.show_token_usage;
+    if(showUsageCb){showUsageCb.checked=!!settings.show_token_usage;showUsageCb.addEventListener('change',_markSettingsDirty,{once:false});}
    const showCliCb=$('settingsShowCliSessions');
-    if(showCliCb) showCliCb.checked=!!settings.show_cli_sessions;
+    if(showCliCb){showCliCb.checked=!!settings.show_cli_sessions;showCliCb.addEventListener('change',_markSettingsDirty,{once:false});}
+    const syncCb=$('settingsSyncInsights');
+    if(syncCb){syncCb.checked=!!settings.sync_to_insights;syncCb.addEventListener('change',_markSettingsDirty,{once:false});}
    // Password field: always blank (we don't send hash back)
    const pwField=$('settingsPassword');
-    if(pwField) pwField.value='';
+    if(pwField){pwField.value='';pwField.addEventListener('input',_markSettingsDirty,{once:false});}
    // Show auth buttons only when auth is active
    try{
      const authStatus=await api('/api/auth/status');
@@ -979,19 +1039,22 @@ async function loadSettingsPanel(){
  }
 }

-async function saveSettings(){
+async function saveSettings(andClose){
  const model=($('settingsModel')||{}).value;
  const workspace=($('settingsWorkspace')||{}).value;
  const sendKey=($('settingsSendKey')||{}).value;
  const showTokenUsage=!!($('settingsShowTokenUsage')||{}).checked;
  const showCliSessions=!!($('settingsShowCliSessions')||{}).checked;
  const pw=($('settingsPassword')||{}).value;
+  const theme=($('settingsTheme')||{}).value||'dark';
  const body={};
  if(model) body.default_model=model;
  if(workspace) body.default_workspace=workspace;
  if(sendKey) body.send_key=sendKey;
+  body.theme=theme;
  body.show_token_usage=showTokenUsage;
  body.show_cli_sessions=showCliSessions;
+  body.sync_to_insights=!!($('settingsSyncInsights')||{}).checked;
  // Password: only act if the field has content; blank = leave auth unchanged
  if(pw && pw.trim()){
    try{
@@ -999,7 +1062,9 @@ async function saveSettings(){
      window._sendKey=sendKey||'enter';
      window._showTokenUsage=showTokenUsage;
      showToast('Settings saved (password set — login now required)');
-      toggleSettings();
+      _settingsDirty=false; _settingsThemeOnOpen=theme;
+      const bar=$('settingsUnsavedBar'); if(bar) bar.style.display='none';
+      $('settingsOverlay').style.display='none';
      return;
    }catch(e){showToast('Save failed: '+e.message);return;}
  }
@@ -1008,10 +1073,12 @@ async function saveSettings(){
    window._sendKey=sendKey||'enter';
    window._showTokenUsage=showTokenUsage;
    window._showCliSessions=showCliSessions;
+    _settingsDirty=false; _settingsThemeOnOpen=theme;
+    const bar=$('settingsUnsavedBar'); if(bar) bar.style.display='none';
    renderMessages();
    if(typeof renderSessionList==='function') renderSessionList();
    showToast('Settings saved');
-    toggleSettings();
+    $('settingsOverlay').style.display='none';
  }catch(e){
    showToast('Save failed: '+e.message);
  }
@@ -1041,10 +1108,10 @@ async function disableAuth(){
  }
 }

-// Close settings on overlay click (not panel click)
+// Close settings on overlay click (not panel click) -- with unsaved-changes check
 document.addEventListener('click',e=>{
  const overlay=$('settingsOverlay');
-  if(overlay&&e.target===overlay) toggleSettings();
+  if(overlay&&e.target===overlay) _closeSettingsPanel();
 });

 // ── Cron completion alerts ────────────────────────────────────────────────────
--- a/static/style.css
+++ b/static/style.css
@@ -2,8 +2,104 @@
  :root {
    --bg:#1a1a2e;--sidebar:#16213e;--border:rgba(255,255,255,0.08);--border2:rgba(255,255,255,0.14);
    --text:#e8e8f0;--muted:#8888aa;--accent:#e94560;--blue:#7cb9ff;--gold:#c9a84c;--code-bg:#0d1117;
+    --surface:#1a2535;--topbar-bg:rgba(22,33,62,.98);--main-bg:rgba(26,26,46,0.5);
+    --focus-ring:rgba(124,185,255,.35);--focus-glow:rgba(124,185,255,.08);
+    --input-bg:rgba(255,255,255,.04);--hover-bg:rgba(255,255,255,.06);
+    --strong:#fff;--em:#c9c9e8;--code-text:#f0c27f;--code-inline-bg:rgba(0,0,0,.35);--pre-text:#e2e8f0;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;font-size:14px;line-height:1.6;
  }
+  /* ── Slate theme ── */
+  :root[data-theme="slate"]{
+    --bg:#2b2d30;--sidebar:#25272b;--border:rgba(255,255,255,0.09);--border2:rgba(255,255,255,0.16);
+    --text:#d4d4d8;--muted:#8a8a9a;--accent:#e06c75;--blue:#82aaff;--gold:#d4a85a;--code-bg:#1e2023;
+    --surface:#2f3134;--topbar-bg:rgba(37,39,43,.98);--main-bg:rgba(43,45,48,0.5);
+    --focus-ring:rgba(130,170,255,.35);--focus-glow:rgba(130,170,255,.08);
+    --strong:#f0f0f3;--em:#b0b0c0;--code-text:#dca06a;--code-inline-bg:rgba(0,0,0,.3);--pre-text:#d0d0d6;
+  }
+  /* ── Light theme ── */
+  :root[data-theme="light"]{
+    --bg:#f0ede8;--sidebar:#e4e0d8;--border:rgba(0,0,0,0.09);--border2:rgba(0,0,0,0.15);
+    --text:#2c2825;--muted:#7a746a;--accent:#b5451b;--blue:#2d6fa3;--gold:#8a6520;--code-bg:#ddd8d0;
+    --surface:#e0dcd4;--topbar-bg:rgba(228,224,216,.98);--main-bg:rgba(240,237,232,0.5);
+    --focus-ring:rgba(45,111,163,.35);--focus-glow:rgba(45,111,163,.1);
+    --input-bg:rgba(0,0,0,.03);--hover-bg:rgba(0,0,0,.05);
+    --strong:#1a1715;--em:#5a544a;--code-text:#8b4513;--code-inline-bg:rgba(0,0,0,.06);--pre-text:#2c2825;
+  }
+  :root[data-theme="light"] ::-webkit-scrollbar-thumb{background:rgba(0,0,0,.15);}
+  :root[data-theme="light"] ::-webkit-scrollbar-thumb:hover{background:rgba(0,0,0,.3);}
+  :root[data-theme="light"] ::selection{background:rgba(45,111,163,.2);}
+  :root[data-theme="light"] *{scrollbar-color:rgba(0,0,0,.15) transparent;}
+  :root[data-theme="light"] .settings-overlay{background:rgba(0,0,0,.3);}
+  /* ── Light theme: sidebar, roles, chips, active states ── */
+  :root[data-theme="light"] .session-item{color:#5a544a;}
+  :root[data-theme="light"] .session-item:hover{background:rgba(0,0,0,.06);color:#2c2825;}
+  :root[data-theme="light"] .session-item.active{background:rgba(45,111,163,.1);color:#1a5a8a;border-left-color:#2d6fa3;}
+  :root[data-theme="light"] .session-item.active .session-actions{background:linear-gradient(to right,transparent,rgba(228,224,216,.95) 12px);}
+  :root[data-theme="light"] .session-pin-indicator{color:#996b15;}
+  :root[data-theme="light"] .session-date-header.pinned{color:#996b15;}
+  :root[data-theme="light"] .session-actions .act-pin.pinned{color:#996b15;}
+  :root[data-theme="light"] .msg-role.user{color:#2d6fa3;}
+  :root[data-theme="light"] .msg-role.assistant{color:#8a6520;}
+  :root[data-theme="light"] .role-icon.user{background:rgba(45,111,163,.12);color:#2d6fa3;border-color:rgba(45,111,163,.25);}
+  :root[data-theme="light"] .role-icon.assistant{background:rgba(138,101,32,.12);color:#8a6520;border-color:rgba(138,101,32,.25);}
+  :root[data-theme="light"] .project-chip{border-color:rgba(0,0,0,.12);background:rgba(0,0,0,.04);}
+  :root[data-theme="light"] .project-chip:hover{background:rgba(0,0,0,.08);color:#2c2825;}
+  :root[data-theme="light"] .project-chip.active{background:rgba(45,111,163,.1);color:#1a5a8a;border-color:rgba(45,111,163,.3);}
+  :root[data-theme="light"] .chip{border-color:rgba(0,0,0,.1);background:rgba(0,0,0,.04);}
+  :root[data-theme="light"] .chip.model{color:#2d6fa3;border-color:rgba(45,111,163,.3);background:rgba(45,111,163,.08);}
+  :root[data-theme="light"] .new-chat-btn{border-color:rgba(45,111,163,.25);color:#2d6fa3;}
+  :root[data-theme="light"] .new-chat-btn:hover{background:rgba(45,111,163,.08);}
+  :root[data-theme="light"] .session-search input{border-color:rgba(0,0,0,.1);background:rgba(0,0,0,.03);}
+  :root[data-theme="light"] .session-search input:focus{border-color:rgba(45,111,163,.4);background:rgba(0,0,0,.02);}
+  :root[data-theme="light"] .cron-item{border-color:rgba(0,0,0,.08);background:rgba(0,0,0,.02);}
+  :root[data-theme="light"] .sm-btn{border-color:rgba(0,0,0,.1);}
+  :root[data-theme="light"] .sm-btn:hover{background:rgba(0,0,0,.06);border-color:rgba(0,0,0,.15);}
+  :root[data-theme="light"] select{border-color:rgba(0,0,0,.12);}
+  :root[data-theme="light"] .composer-box{border-color:rgba(0,0,0,.12);}
+  :root[data-theme="light"] .composer-box:focus-within{border-color:rgba(45,111,163,.5);box-shadow:0 0 0 3px rgba(45,111,163,.08);}
+  :root[data-theme="light"] .suggestion{border-color:rgba(0,0,0,.08);}
+  :root[data-theme="light"] .suggestion:hover{background:rgba(45,111,163,.06);border-color:rgba(45,111,163,.2);}
+  :root[data-theme="light"] .tool-card{border-color:rgba(0,0,0,.08);}
+  :root[data-theme="light"] .tool-card:hover{border-color:rgba(0,0,0,.15);}
+  :root[data-theme="light"] .icon-btn:hover{background:rgba(0,0,0,.06);}
+  :root[data-theme="light"] .panel-icon-btn:hover{background:rgba(0,0,0,.06);}
+  :root[data-theme="light"] .file-item:hover{background:rgba(0,0,0,.04);}
+  :root[data-theme="light"] .preview-md th{background:rgba(0,0,0,.04);}
+  :root[data-theme="light"] .preview-md td{border-color:rgba(0,0,0,.08);}
+  :root[data-theme="light"] .preview-badge.code{background:rgba(0,0,0,.05);}
+  :root[data-theme="light"] .ctx-bar-wrap{background:rgba(0,0,0,.08);}
+  :root[data-theme="light"] .ws-opt:hover{background:rgba(0,0,0,.05);}
+  :root[data-theme="light"] .profile-opt:hover{background:rgba(0,0,0,.05);}
+  :root[data-theme="light"] .profile-opt.active{background:rgba(45,111,163,.06);}
+  :root[data-theme="light"] .profile-chip{color:#7a5a90!important;}
+  :root[data-theme="light"] .nav-tab:hover::after{background:var(--surface);border-color:rgba(45,111,163,.25);color:#2d6fa3;}
+  :root[data-theme="light"] .cron-status.disabled{background:rgba(0,0,0,.05);}
+  :root[data-theme="light"] .cron-btn{background:rgba(0,0,0,.04);}
+  :root[data-theme="light"] .cron-btn:hover{background:rgba(0,0,0,.08);}
+  /* ── Solarized Dark theme ── */
+  :root[data-theme="solarized"]{
+    --bg:#002b36;--sidebar:#073642;--border:rgba(255,255,255,0.08);--border2:rgba(255,255,255,0.13);
+    --text:#839496;--muted:#657b83;--accent:#dc322f;--blue:#268bd2;--gold:#b58900;--code-bg:#073642;
+    --surface:#0a3c48;--topbar-bg:rgba(7,54,66,.98);--main-bg:rgba(0,43,54,0.5);
+    --focus-ring:rgba(38,139,210,.35);--focus-glow:rgba(38,139,210,.08);
+    --strong:#fdf6e3;--em:#93a1a1;--code-text:#cb4b16;--code-inline-bg:rgba(0,0,0,.25);--pre-text:#93a1a1;
+  }
+  /* ── Monokai theme ── */
+  :root[data-theme="monokai"]{
+    --bg:#272822;--sidebar:#1e1f1c;--border:rgba(255,255,255,0.07);--border2:rgba(255,255,255,0.12);
+    --text:#f8f8f2;--muted:#75715e;--accent:#f92672;--blue:#66d9e8;--gold:#e6db74;--code-bg:#1e1f1c;
+    --surface:#2d2e28;--topbar-bg:rgba(30,31,28,.98);--main-bg:rgba(39,40,34,0.5);
+    --focus-ring:rgba(102,217,232,.35);--focus-glow:rgba(102,217,232,.08);
+    --strong:#f8f8f0;--em:#a6a28c;--code-text:#e6db74;--code-inline-bg:rgba(0,0,0,.3);--pre-text:#f8f8f2;
+  }
+  /* ── Nord theme ── */
+  :root[data-theme="nord"]{
+    --bg:#2e3440;--sidebar:#272c36;--border:rgba(255,255,255,0.07);--border2:rgba(255,255,255,0.12);
+    --text:#eceff4;--muted:#9099aa;--accent:#bf616a;--blue:#81a1c1;--gold:#ebcb8b;--code-bg:#272c36;
+    --surface:#333a47;--topbar-bg:rgba(39,44,54,.98);--main-bg:rgba(46,52,64,0.5);
+    --focus-ring:rgba(129,161,193,.35);--focus-glow:rgba(129,161,193,.08);
+    --strong:#eceff4;--em:#b8c0cc;--code-text:#a3be8c;--code-inline-bg:rgba(0,0,0,.2);--pre-text:#d8dee9;
+  }
  body{background:var(--bg);color:var(--text);height:100vh;height:100dvh;overflow:hidden;display:flex;}
  .layout{display:flex;width:100%;height:100vh;height:100dvh;}
  .sidebar{width:300px;background:var(--sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:visible;flex-shrink:0;}
@@ -15,13 +111,13 @@
  .new-chat-btn:hover{background:rgba(124,185,255,0.13);border-color:rgba(124,185,255,.3);}
  .session-list{flex:1;overflow-y:auto;padding:0 8px 8px;min-height:0;}
  .session-search{padding:4px 10px 8px;flex-shrink:0;}
-  .session-search input{width:100%;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:8px;color:var(--text);padding:7px 12px;font-size:12px;outline:none;transition:all .15s;}
-  .session-search input:focus{border-color:rgba(124,185,255,.35);background:rgba(255,255,255,.06);box-shadow:0 0 0 2px rgba(124,185,255,.07);}
+  .session-search input{width:100%;background:var(--input-bg);border:1px solid var(--border);border-radius:8px;color:var(--text);padding:7px 12px;font-size:12px;outline:none;transition:all .15s;}
+  .session-search input:focus{border-color:rgba(124,185,255,.35);background:var(--hover-bg);box-shadow:0 0 0 2px rgba(124,185,255,.07);}
  .session-search input::placeholder{color:var(--muted);opacity:.7;}
  /* Inline session title edit */
-  .session-title-input{flex:1;background:rgba(20,32,60,.9);border:1px solid rgba(124,185,255,.6);border-radius:6px;color:var(--text);padding:3px 8px;font-size:13px;outline:none;min-width:0;box-shadow:0 0 0 2px rgba(124,185,255,.15);font-family:inherit;}
+  .session-title-input{flex:1;background:var(--surface);border:1px solid rgba(124,185,255,.6);border-radius:6px;color:var(--text);padding:3px 8px;font-size:13px;outline:none;min-width:0;box-shadow:0 0 0 2px rgba(124,185,255,.15);font-family:inherit;}
  .session-item{padding:8px 10px 8px 8px;border-radius:0 8px 8px 0;cursor:pointer;font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:background .15s,color .15s,border-color .15s;display:flex;align-items:center;gap:6px;min-width:0;border-left:2px solid transparent;position:relative;}
-  .session-item:hover{background:rgba(255,255,255,0.06);color:var(--text);}
+  .session-item:hover{background:var(--hover-bg);color:var(--text);}
  .session-item.active{background:rgba(232,160,48,0.12);color:#e8a030;border-left:2px solid #e8a030;padding-left:8px;}
  .session-title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  /* ── Session action button overlay ── */
@@ -43,21 +139,21 @@
  .session-date-header.pinned{color:#f5c542;}
  .session-date-caret{font-size:9px;transition:transform .2s;flex-shrink:0;display:inline-block;}
  .session-date-caret.collapsed{transform:rotate(-90deg);}
-  .toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:rgba(20,30,50,.95);backdrop-filter:blur(12px);border:1px solid rgba(124,185,255,0.25);color:var(--text);font-size:13px;padding:10px 20px;border-radius:12px;pointer-events:none;opacity:0;transition:opacity .2s,transform .2s;z-index:100;box-shadow:0 4px 20px rgba(0,0,0,.3);letter-spacing:.01em;}
+  .toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--surface);backdrop-filter:blur(12px);border:1px solid rgba(124,185,255,0.25);color:var(--text);font-size:13px;padding:10px 20px;border-radius:12px;pointer-events:none;opacity:0;transition:opacity .2s,transform .2s;z-index:100;box-shadow:0 4px 20px rgba(0,0,0,.3);letter-spacing:.01em;}
  .toast.show{opacity:1;transform:translateX(-50%) translateY(-2px);}
-  .reconnect-banner{display:none;background:#1a2535;border:1px solid rgba(201,168,76,0.4);border-radius:10px;padding:10px 16px;margin:10px auto;max-width:780px;font-size:13px;color:var(--gold);display:none;align-items:center;justify-content:space-between;gap:12px;}
+  .reconnect-banner{display:none;background:var(--surface);border:1px solid rgba(201,168,76,0.4);border-radius:10px;padding:10px 16px;margin:10px auto;max-width:780px;font-size:13px;color:var(--gold);display:none;align-items:center;justify-content:space-between;gap:12px;}
  .reconnect-banner.visible{display:flex;}
  .reconnect-btn{padding:5px 12px;border-radius:7px;font-size:12px;font-weight:600;background:rgba(201,168,76,0.15);border:1px solid rgba(201,168,76,0.4);color:var(--gold);cursor:pointer;}
  .reconnect-btn:hover{background:rgba(201,168,76,0.25);}
  /* ── Approval card ── */
  .approval-card{display:none;max-width:780px;margin:0 auto 0;padding:0 20px 12px;}
  .approval-card.visible{display:block;}
-  .approval-inner{background:rgba(20,30,50,.95);backdrop-filter:blur(8px);border:1px solid rgba(233,69,96,0.35);border-radius:14px;padding:14px 16px;}
+  .approval-inner{background:var(--surface);backdrop-filter:blur(8px);border:1px solid rgba(233,69,96,0.35);border-radius:14px;padding:14px 16px;}
  .approval-header{display:flex;align-items:center;gap:8px;margin-bottom:10px;font-size:13px;font-weight:600;color:#e94560;}
  .approval-desc{font-size:12px;color:var(--muted);margin-bottom:8px;}
-  .approval-cmd{background:var(--code-bg);border:1px solid rgba(255,255,255,.08);border-radius:8px;padding:8px 12px;font-family:"SF Mono",ui-monospace,monospace;font-size:12px;color:#e2e8f0;white-space:pre-wrap;word-break:break-all;margin-bottom:12px;max-height:120px;overflow-y:auto;}
+  .approval-cmd{background:var(--code-bg);border:1px solid var(--border);border-radius:8px;padding:8px 12px;font-family:"SF Mono",ui-monospace,monospace;font-size:12px;color:var(--pre-text);white-space:pre-wrap;word-break:break-all;margin-bottom:12px;max-height:120px;overflow-y:auto;}
  .approval-btns{display:flex;gap:8px;flex-wrap:wrap;}
-  .approval-btn{padding:6px 14px;border-radius:8px;font-size:12px;font-weight:600;border:1px solid var(--border2);background:rgba(255,255,255,0.06);color:var(--text);cursor:pointer;transition:all .15s;}
+  .approval-btn{padding:6px 14px;border-radius:8px;font-size:12px;font-weight:600;border:1px solid var(--border2);background:var(--hover-bg);color:var(--text);cursor:pointer;transition:all .15s;}
  .approval-btn:hover{background:rgba(255,255,255,0.12);}
  .approval-btn.once{border-color:rgba(124,185,255,0.5);color:var(--blue);}
  .approval-btn.once:hover{background:rgba(124,185,255,0.15);}
@@ -69,7 +165,7 @@
  .sidebar-nav{display:flex;border-bottom:1px solid var(--border);flex-shrink:0;padding:6px 8px 0;gap:2px;}
  .nav-tab{flex:1;padding:10px 4px 8px;font-size:20px;text-align:center;cursor:pointer;color:var(--muted);border:none;background:none;transition:color .15s;border-bottom:2px solid transparent;white-space:nowrap;overflow:hidden;position:relative;}
  .nav-tab:hover{color:var(--text);}
-  .nav-tab:hover::after{content:attr(data-label);position:absolute;bottom:calc(100% + 8px);left:50%;transform:translateX(-50%);background:rgba(15,22,40,.98);border:1px solid rgba(124,185,255,0.3);color:var(--blue);font-size:12px;font-weight:700;letter-spacing:.02em;padding:5px 11px;border-radius:7px;white-space:nowrap;pointer-events:none;z-index:50;box-shadow:0 4px 12px rgba(0,0,0,.3);}
+  .nav-tab:hover::after{content:attr(data-label);position:absolute;bottom:calc(100% + 8px);left:50%;transform:translateX(-50%);background:var(--surface);border:1px solid rgba(124,185,255,0.3);color:var(--blue);font-size:12px;font-weight:700;letter-spacing:.02em;padding:5px 11px;border-radius:7px;white-space:nowrap;pointer-events:none;z-index:50;box-shadow:0 4px 12px rgba(0,0,0,.3);}
  .nav-tab.active{color:var(--blue);}
  .nav-tab.active::before{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:20px;height:2px;background:var(--blue);border-radius:2px 2px 0 0;}
  /* Panel content areas (swapped by tab) */
@@ -77,7 +173,7 @@
  .panel-view.active{display:flex;}
  /* Cron panel */
  .cron-list{flex:1;overflow-y:auto;padding:8px;}
-  .cron-item{border-radius:10px;border:1px solid rgba(255,255,255,.08);margin-bottom:6px;overflow:hidden;transition:border-color .15s,background .15s;background:rgba(255,255,255,.02);}
+  .cron-item{border-radius:10px;border:1px solid var(--border);margin-bottom:6px;overflow:hidden;transition:border-color .15s,background .15s;background:rgba(255,255,255,.02);}
  .cron-item:hover{border-color:var(--border2);}
  .cron-header{display:flex;align-items:center;gap:8px;padding:9px 11px;cursor:pointer;}
  .cron-name{flex:1;font-size:13px;color:var(--text);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
@@ -100,14 +196,14 @@
  .cron-last-header{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:4px;}
  /* Skills panel */
  .skills-search{padding:8px;flex-shrink:0;}
-  .skills-search input{width:100%;background:rgba(255,255,255,.06);border:1px solid var(--border2);border-radius:7px;color:var(--text);padding:6px 10px;font-size:12px;outline:none;}
+  .skills-search input{width:100%;background:var(--hover-bg);border:1px solid var(--border2);border-radius:7px;color:var(--text);padding:6px 10px;font-size:12px;outline:none;}
  .skills-search input::placeholder{color:var(--muted);}
  .skills-list{flex:1;overflow-y:auto;padding:0 8px 8px;}
  .skills-category{margin-bottom:4px;}
  .skills-cat-header{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);padding:8px 6px 4px;cursor:pointer;display:flex;align-items:center;gap:4px;}
  .skills-cat-header:hover{color:var(--text);}
  .skill-item{padding:7px 10px;border-radius:7px;cursor:pointer;font-size:12px;color:var(--muted);display:flex;align-items:flex-start;gap:6px;transition:all .12s;line-height:1.4;}
-  .skill-item:hover{background:rgba(255,255,255,.06);color:var(--text);}
+  .skill-item:hover{background:var(--hover-bg);color:var(--text);}
  .skill-item.active{background:rgba(124,185,255,.1);color:var(--blue);}
  .skill-name{font-weight:500;flex-shrink:0;}
  .skill-desc{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:11px;opacity:.7;}
@@ -121,19 +217,19 @@
  .memory-empty{color:var(--muted);font-size:12px;font-style:italic;}
  .sidebar-bottom{border-top:1px solid var(--border);padding:12px 14px;flex-shrink:0;position:relative;z-index:10;overflow:visible;}
  .field-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:5px;opacity:.8;}
-  select{width:100%;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,.1);border-radius:8px;color:var(--text);padding:7px 28px 7px 10px;font-size:12px;outline:none;appearance:none;margin-bottom:6px;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%238888aa' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;}
+  select{width:100%;background:var(--input-bg);border:1px solid var(--border2);border-radius:8px;color:var(--text);padding:7px 28px 7px 10px;font-size:12px;outline:none;appearance:none;margin-bottom:6px;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%238888aa' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;}
  select:focus{border-color:rgba(124,185,255,.4);box-shadow:0 0 0 2px rgba(124,185,255,.08);}
  optgroup{color:var(--muted);font-size:11px;font-weight:700;}
-  option{background:#1a1a2e;color:var(--text);padding:6px;}
+  option{background:var(--bg);color:var(--text);padding:6px;}
  .sidebar-actions{display:flex;gap:6px;}
-  .sm-btn{flex:1;padding:7px 0;border-radius:8px;font-size:11px;font-weight:500;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,.08);color:var(--muted);cursor:pointer;transition:all .15s;text-align:center;letter-spacing:.02em;}
+  .sm-btn{flex:1;padding:7px 0;border-radius:8px;font-size:11px;font-weight:500;background:var(--input-bg);border:1px solid var(--border);color:var(--muted);cursor:pointer;transition:all .15s;text-align:center;letter-spacing:.02em;}
  .sm-btn:hover{background:rgba(255,255,255,0.09);color:var(--text);border-color:rgba(255,255,255,.15);}
-  .main{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0;background:rgba(26,26,46,0.5);}
-  .topbar{padding:12px 20px;border-bottom:1px solid var(--border);background:rgba(22,33,62,.98);backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:space-between;flex-shrink:0;position:relative;z-index:10;}
+  .main{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0;background:var(--main-bg);}
+  .topbar{padding:12px 20px;border-bottom:1px solid var(--border);background:var(--topbar-bg);backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:space-between;flex-shrink:0;position:relative;z-index:10;}
  .topbar-title{font-size:15px;font-weight:600;letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .topbar-meta{font-size:11px;color:var(--muted);margin-top:3px;opacity:.75;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .topbar-chips{display:flex;gap:6px;align-items:center;flex-shrink:0;}
-  .chip{font-size:11px;padding:4px 10px;border-radius:999px;background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,.1);color:var(--muted);font-weight:500;}
+  .chip{font-size:11px;padding:4px 10px;border-radius:999px;background:rgba(255,255,255,0.05);border:1px solid var(--border2);color:var(--muted);font-weight:500;}
  .chip.model{color:var(--blue);border-color:rgba(124,185,255,0.35);background:rgba(124,185,255,0.1);}
  .messages{flex:1;overflow-y:auto;display:flex;flex-direction:column;min-height:0;position:relative;z-index:0;}
  .messages-inner{max-width:800px;margin:0 auto;width:100%;padding:20px 24px 32px;display:flex;flex-direction:column;}
@@ -150,11 +246,11 @@
  .msg-body ul,.msg-body ol{margin:6px 0 10px 20px;}.msg-body li{margin-bottom:3px;}
  .msg-body h1,.msg-body h2,.msg-body h3{margin:16px 0 6px;font-weight:600;}
  .msg-body h1{font-size:18px;}.msg-body h2{font-size:16px;}.msg-body h3{font-size:14px;}
-  .msg-body strong{color:#fff;font-weight:600;}.msg-body em{color:#c9c9e8;font-style:italic;}
-  .msg-body code{font-family:"SF Mono","Fira Code",ui-monospace,monospace;font-size:12.5px;background:rgba(0,0,0,.35);padding:1px 5px;border-radius:4px;color:#f0c27f;}
-  .msg-body pre{background:var(--code-bg);border:1px solid rgba(255,255,255,.08);border-radius:10px;padding:14px 16px;overflow-x:auto;margin:10px 0;}
-  .msg-body pre code{background:none;padding:0;border-radius:0;color:#e2e8f0;font-size:13px;line-height:1.6;}
-  .pre-header{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);padding:8px 16px 8px;background:rgba(255,255,255,.04);border-radius:10px 10px 0 0;border:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.05);display:flex;align-items:center;gap:6px;}
+  .msg-body strong{color:var(--strong);font-weight:600;}.msg-body em{color:var(--em);font-style:italic;}
+  .msg-body code{font-family:"SF Mono","Fira Code",ui-monospace,monospace;font-size:12.5px;background:var(--code-inline-bg);padding:1px 5px;border-radius:4px;color:var(--code-text);}
+  .msg-body pre{background:var(--code-bg);border:1px solid var(--border);border-radius:10px;padding:14px 16px;overflow-x:auto;margin:10px 0;}
+  .msg-body pre code{background:none;padding:0;border-radius:0;color:var(--pre-text);font-size:13px;line-height:1.6;}
+  .pre-header{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);padding:8px 16px 8px;background:var(--input-bg);border-radius:10px 10px 0 0;border:1px solid var(--border);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:6px;}
  .pre-header::before{content:'';width:8px;height:8px;border-radius:50%;background:var(--muted);opacity:.4;}
  .pre-header+pre{border-radius:0 0 10px 10px;border-top:none;margin-top:0;}
  .msg-body blockquote{border-left:3px solid var(--blue);padding-left:14px;color:var(--muted);font-style:italic;margin:10px 0;}
@@ -171,11 +267,11 @@
  .empty-state h2{font-size:20px;color:var(--text);font-weight:700;letter-spacing:-.02em;}
  .empty-state p{font-size:14px;text-align:center;max-width:320px;}
  .suggestion-grid{display:flex;flex-direction:column;gap:8px;margin-top:12px;width:100%;max-width:380px;}
-  .suggestion{padding:11px 14px;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,.08);border-radius:10px;font-size:13px;color:var(--muted);cursor:pointer;transition:all .15s;text-align:left;}
+  .suggestion{padding:11px 14px;background:var(--input-bg);border:1px solid var(--border);border-radius:10px;font-size:13px;color:var(--muted);cursor:pointer;transition:all .15s;text-align:left;}
  .suggestion:hover{background:rgba(124,185,255,0.07);color:var(--text);border-color:rgba(124,185,255,.3);transform:translateX(2px);}
  /* ── Composer ── */
  .composer-wrap{border-top:1px solid var(--border);padding:12px 20px 16px;background:var(--bg);flex-shrink:0;}
-  .composer-box{max-width:780px;margin:0 auto;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,.12);border-radius:16px;display:flex;flex-direction:column;transition:border-color .2s,box-shadow .2s;position:relative;}
+  .composer-box{max-width:780px;margin:0 auto;background:var(--input-bg);border:1px solid var(--border2);border-radius:16px;display:flex;flex-direction:column;transition:border-color .2s,box-shadow .2s;position:relative;}
  .composer-box:focus-within{border-color:rgba(124,185,255,0.5);box-shadow:0 0 0 3px rgba(124,185,255,0.08);}
  .composer-wrap.drag-over .composer-box{border-color:var(--blue);background:rgba(124,185,255,0.06);}
  .drop-hint{display:none;position:absolute;inset:0;align-items:center;justify-content:center;background:rgba(124,185,255,0.08);border:2px dashed var(--blue);border-radius:14px;font-size:14px;color:var(--blue);pointer-events:none;z-index:10;flex-direction:column;gap:8px;}
@@ -212,12 +308,12 @@
  .send-btn:disabled{opacity:.35;cursor:not-allowed;transform:none;box-shadow:none;}
  .send-btn.visible{animation:send-pop-in .18s cubic-bezier(.34,1.56,.64,1) forwards;}
  @keyframes send-pop-in{from{opacity:0;transform:scale(.55);}to{opacity:1;transform:scale(1);}}
-  .upload-bar-wrap{display:none;height:3px;background:rgba(255,255,255,.06);border-radius:0 0 16px 16px;overflow:hidden;}
+  .upload-bar-wrap{display:none;height:3px;background:var(--hover-bg);border-radius:0 0 16px 16px;overflow:hidden;}
  .upload-bar-wrap.active{display:block;}
  .upload-bar{height:100%;background:linear-gradient(90deg,var(--blue),#a0d0ff);width:0%;transition:width .3s ease;}
-  .rightpanel{width:300px;background:var(--sidebar);border-left:1px solid rgba(255,255,255,.06);display:flex;flex-direction:column;overflow:hidden;flex-shrink:0;}
+  .rightpanel{width:300px;background:var(--sidebar);border-left:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;flex-shrink:0;}
  .panel-header{padding:12px 16px;border-bottom:1px solid var(--border);font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.1em;display:flex;align-items:center;justify-content:space-between;}
-  .git-badge{font-size:9px;font-weight:600;color:var(--muted);background:rgba(255,255,255,.06);padding:2px 7px;border-radius:4px;letter-spacing:.02em;margin-left:auto;margin-right:4px;white-space:nowrap;font-family:'SF Mono',ui-monospace,monospace;}
+  .git-badge{font-size:9px;font-weight:600;color:var(--muted);background:var(--hover-bg);padding:2px 7px;border-radius:4px;letter-spacing:.02em;margin-left:auto;margin-right:4px;white-space:nowrap;font-family:'SF Mono',ui-monospace,monospace;}
  .git-badge.dirty{color:var(--gold);background:rgba(201,168,76,.1);}
  .panel-actions{display:flex;gap:4px;}
  .panel-icon-btn{width:24px;height:24px;background:none;border:none;color:var(--muted);cursor:pointer;border-radius:5px;font-size:13px;display:flex;align-items:center;justify-content:center;transition:all .15s;}
@@ -231,7 +327,7 @@
  .breadcrumb-bar{display:flex;align-items:center;gap:2px;padding:6px 12px;font-size:12px;border-bottom:1px solid var(--border);flex-shrink:0;overflow:hidden;white-space:nowrap;}
  .breadcrumb-seg{padding:1px 3px;border-radius:3px;}
  .breadcrumb-link{color:var(--muted);cursor:pointer;transition:color .12s;}
-  .breadcrumb-link:hover{color:var(--text);background:rgba(255,255,255,.06);}
+  .breadcrumb-link:hover{color:var(--text);background:var(--hover-bg);}
  .breadcrumb-current{color:var(--text);font-weight:500;}
  .breadcrumb-sep{color:var(--border);margin:0 1px;font-size:11px;}
  .file-tree{flex:1;overflow-y:auto;padding:8px;}
@@ -251,15 +347,15 @@
  /* Markdown rendered preview */
  .preview-md{font-size:13px;line-height:1.7;color:var(--text);flex:1;overflow-y:auto;min-height:0;}
  .preview-md p{margin-bottom:10px;}.preview-md p:last-child{margin-bottom:0;}
-  .preview-md h1{font-size:18px;font-weight:700;margin:16px 0 8px;color:#fff;border-bottom:1px solid var(--border);padding-bottom:6px;}
-  .preview-md h2{font-size:15px;font-weight:600;margin:14px 0 6px;color:#fff;}
+  .preview-md h1{font-size:18px;font-weight:700;margin:16px 0 8px;color:var(--strong);border-bottom:1px solid var(--border);padding-bottom:6px;}
+  .preview-md h2{font-size:15px;font-weight:600;margin:14px 0 6px;color:var(--strong);}
  .preview-md h3{font-size:13px;font-weight:600;margin:12px 0 4px;color:#e8e8f0;}
  .preview-md ul,.preview-md ol{margin:4px 0 10px 18px;}.preview-md li{margin-bottom:3px;}
-  .preview-md code{font-family:"SF Mono",ui-monospace,monospace;font-size:11.5px;background:rgba(0,0,0,.35);padding:1px 5px;border-radius:4px;color:#f0c27f;}
-  .preview-md pre{background:var(--code-bg);border:1px solid rgba(255,255,255,.08);border-radius:8px;padding:10px 12px;overflow-x:auto;margin:8px 0;}
-  .preview-md pre code{background:none;padding:0;color:#e2e8f0;font-size:11.5px;line-height:1.55;}
+  .preview-md code{font-family:"SF Mono",ui-monospace,monospace;font-size:11.5px;background:var(--code-inline-bg);padding:1px 5px;border-radius:4px;color:var(--code-text);}
+  .preview-md pre{background:var(--code-bg);border:1px solid var(--border);border-radius:8px;padding:10px 12px;overflow-x:auto;margin:8px 0;}
+  .preview-md pre code{background:none;padding:0;color:var(--pre-text);font-size:11.5px;line-height:1.55;}
  .preview-md blockquote{border-left:3px solid var(--blue);padding-left:12px;color:var(--muted);font-style:italic;margin:8px 0;}
-  .preview-md strong{color:#fff;font-weight:600;}.preview-md em{color:#c9c9e8;}
+  .preview-md strong{color:var(--strong);font-weight:600;}.preview-md em{color:var(--em);}
  .preview-md a{color:var(--blue);text-decoration:underline;}
  .preview-md hr{border:none;border-top:1px solid var(--border);margin:12px 0;}
  .preview-md table{border-collapse:collapse;width:100%;margin:8px 0;font-size:12px;}
@@ -353,14 +449,14 @@
    /* Tool cards */
    .tool-card{margin-left:0!important;font-size:12px;}
    /* Settings modal */
-    .settings-panel{width:95vw;max-width:95vw;}
+    .settings-panel{width:95vw;max-width:95vw;min-height:min(580px,88vh);max-height:92vh;}
    /* Login page responsive */
    .card{width:90vw;max-width:320px;padding:28px 24px;}
  }

 /* ── Workspace dropdown (topbar) ── */
 .ws-chip{user-select:none;}
-.ws-dropdown{display:none;position:absolute;bottom:calc(100% + 4px);left:0;right:0;min-width:200px;background:#1a2535;border:1px solid var(--border2);border-radius:10px;box-shadow:0 -4px 24px rgba(0,0,0,.4);z-index:200;overflow:hidden;max-height:320px;overflow-y:auto;}
+.ws-dropdown{display:none;position:absolute;bottom:calc(100% + 4px);left:0;right:0;min-width:200px;background:var(--surface);border:1px solid var(--border2);border-radius:10px;box-shadow:0 -4px 24px rgba(0,0,0,.4);z-index:200;overflow:hidden;max-height:320px;overflow-y:auto;}
 .ws-dropdown.open{display:block;}
 .ws-opt{padding:10px 14px;cursor:pointer;transition:background .12s;display:flex;flex-direction:column;gap:4px;align-items:flex-start;}
 .ws-opt:hover{background:rgba(255,255,255,.07);}
@@ -380,7 +476,7 @@
 .ws-action-btn:hover{background:rgba(255,255,255,.1);color:var(--text);}
 /* ── Profile dropdown + management panel ── */
 .profile-chip{user-select:none;color:rgba(168,139,250,.9)!important;}
-.profile-dropdown{display:none;position:absolute;top:calc(100% + 6px);right:0;min-width:260px;background:#1a2535;border:1px solid var(--border2);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.4);z-index:200;overflow:hidden;max-height:380px;overflow-y:auto;}
+.profile-dropdown{display:none;position:absolute;top:calc(100% + 6px);right:0;min-width:260px;background:var(--surface);border:1px solid var(--border2);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.4);z-index:200;overflow:hidden;max-height:380px;overflow-y:auto;}
 .profile-dropdown.open{display:block;}
 .profile-opt{padding:9px 14px;cursor:pointer;transition:background .12s;}
 .profile-opt:hover{background:rgba(255,255,255,.07);}
@@ -398,7 +494,7 @@
 .profile-card-meta{font-size:11px;color:var(--muted);margin-top:3px;padding-left:12px;}
 .profile-card-actions{display:flex;gap:4px;flex-shrink:0;}
 /* ── Slash command autocomplete dropdown ── */
-.cmd-dropdown{display:none;position:absolute;bottom:100%;left:0;right:0;background:#1a2535;border:1px solid var(--border2);border-radius:10px;box-shadow:0 -8px 24px rgba(0,0,0,.4);z-index:200;max-height:240px;overflow-y:auto;margin-bottom:4px;}
+.cmd-dropdown{display:none;position:absolute;bottom:100%;left:0;right:0;background:var(--surface);border:1px solid var(--border2);border-radius:10px;box-shadow:0 -8px 24px rgba(0,0,0,.4);z-index:200;max-height:240px;overflow-y:auto;margin-bottom:4px;}
 .cmd-dropdown.open{display:block;}
 .cmd-item{padding:8px 14px;cursor:pointer;transition:background .12s;}
 .cmd-item:hover,.cmd-item.selected{background:rgba(255,255,255,.07);}
@@ -418,7 +514,7 @@
 .msg-edit-bar{display:flex;gap:8px;margin-top:8px;margin-bottom:4px;}
 .msg-edit-send{background:var(--blue);color:#fff;border:none;border-radius:7px;padding:6px 16px;font-size:13px;font-weight:600;cursor:pointer;transition:opacity .15s;}
 .msg-edit-send:hover{opacity:.85;}
-.msg-edit-cancel{background:rgba(255,255,255,.06);color:var(--muted);border:1px solid var(--border2);border-radius:7px;padding:6px 12px;font-size:13px;cursor:pointer;transition:background .15s;}
+.msg-edit-cancel{background:var(--hover-bg);color:var(--muted);border:1px solid var(--border2);border-radius:7px;padding:6px 12px;font-size:13px;cursor:pointer;transition:background .15s;}
 .msg-edit-cancel:hover{background:rgba(255,255,255,.1);}

 /* ── Clear conversation chip ── */
@@ -596,7 +692,7 @@ body.resizing{user-select:none;cursor:col-resize;}
 .skill-linked-section{margin-bottom:8px;}
 .skill-linked-section h4{font-size:10px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:4px;}
 .skill-linked-file{display:block;font-size:12px;padding:3px 6px;border-radius:4px;cursor:pointer;color:var(--blue);text-decoration:none;}
-.skill-linked-file:hover{background:rgba(255,255,255,.06);}
+.skill-linked-file:hover{background:var(--hover-bg);}
 .tool-card-row{margin:0;padding:1px 0;}
 .tool-card{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.07);border-radius:6px;margin:2px 0 2px 40px;overflow:hidden;transition:border-color .15s;}
 .tool-card:hover{border-color:rgba(255,255,255,.12);}
@@ -624,7 +720,7 @@ body.resizing{user-select:none;cursor:col-resize;}

 /* ── Settings overlay ── */
 .settings-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:1000;display:flex;align-items:center;justify-content:center;}
-.settings-panel{background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:0;width:380px;max-width:90vw;max-height:80vh;overflow:visible;box-shadow:0 12px 40px rgba(0,0,0,.5);display:flex;flex-direction:column;}
+.settings-panel{background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:0;width:420px;max-width:92vw;max-height:92vh;min-height:min(680px,90vh);overflow:visible;box-shadow:0 12px 40px rgba(0,0,0,.5);display:flex;flex-direction:column;}
 .settings-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px 12px;border-bottom:1px solid var(--border);}
 .settings-body{padding:20px;overflow-y:auto;flex:1;}
 .settings-field{margin-bottom:16px;}
@@ -666,13 +762,13 @@ body.resizing{user-select:none;cursor:col-resize;}

 /* ── Session projects ── */
 .project-bar{display:flex;gap:4px;padding:4px 10px 8px;flex-wrap:wrap;align-items:center;flex-shrink:0;}
-.project-chip{font-size:10px;font-weight:600;padding:3px 8px;border-radius:12px;cursor:pointer;border:1px solid var(--border2);background:rgba(255,255,255,.04);color:var(--muted);transition:all .15s;white-space:nowrap;display:inline-flex;align-items:center;gap:4px;}
+.project-chip{font-size:10px;font-weight:600;padding:3px 8px;border-radius:12px;cursor:pointer;border:1px solid var(--border2);background:var(--input-bg);color:var(--muted);transition:all .15s;white-space:nowrap;display:inline-flex;align-items:center;gap:4px;}
 .project-chip:hover{background:rgba(255,255,255,.08);color:var(--text);}
 .project-chip.active{background:rgba(124,185,255,.12);color:var(--blue);border-color:rgba(124,185,255,.4);}
 .project-chip .color-dot{width:6px;height:6px;border-radius:50%;display:inline-block;flex-shrink:0;}
 .project-create-btn{font-size:10px;padding:3px 6px;border-radius:12px;cursor:pointer;border:1px dashed var(--border2);background:none;color:var(--muted);opacity:.6;transition:all .15s;}
 .project-create-btn:hover{opacity:1;border-color:var(--blue);color:var(--blue);}
-.project-create-input{font-size:10px;padding:3px 8px;border-radius:12px;border:1px solid rgba(124,185,255,.6);background:rgba(20,32,60,.9);color:var(--text);outline:none;width:100px;font-family:inherit;box-shadow:0 0 0 2px rgba(124,185,255,.15);}
+.project-create-input{font-size:10px;padding:3px 8px;border-radius:12px;border:1px solid rgba(124,185,255,.6);background:var(--surface);color:var(--text);outline:none;width:100px;font-family:inherit;box-shadow:0 0 0 2px rgba(124,185,255,.15);}
 .project-picker{position:absolute;right:0;top:100%;background:var(--sidebar);border:1px solid var(--border2);border-radius:8px;padding:4px;z-index:30;min-width:160px;max-width:220px;width:max-content;box-shadow:0 4px 16px rgba(0,0,0,.3);}
 .project-picker-item{padding:5px 10px;font-size:11px;border-radius:6px;cursor:pointer;color:var(--muted);transition:all .1s;display:flex;align-items:center;gap:6px;}
 .project-picker-item:hover{background:rgba(255,255,255,.08);color:var(--text);}
@@ -682,7 +778,7 @@ body.resizing{user-select:none;cursor:col-resize;}
 .session-project-dot{width:6px;height:6px;border-radius:50%;flex-shrink:0;display:inline-block;margin-left:4px;vertical-align:middle;}

 /* ── Code copy button ── */
-.code-copy-btn{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:4px;color:var(--muted);font-size:11px;cursor:pointer;padding:2px 6px;transition:all .15s;line-height:1.3;}
+.code-copy-btn{background:var(--hover-bg);border:1px solid var(--border2);border-radius:4px;color:var(--muted);font-size:11px;cursor:pointer;padding:2px 6px;transition:all .15s;line-height:1.3;}
 .code-copy-btn:hover{background:rgba(255,255,255,.12);color:var(--text);}

 /* ── Tool card expand/collapse toggle ── */
--- a/tests/test_sprint26.py
+++ b/tests/test_sprint26.py
@@ -0,0 +1,119 @@
+"""
+Sprint 26 Tests: pluggable UI themes — settings persistence, theme default,
+custom theme names accepted.
+"""
+import json, urllib.error, urllib.request
+
+BASE = "http://127.0.0.1:8788"
+
+
+def get(path):
+    with urllib.request.urlopen(BASE + path, timeout=10) as r:
+        return json.loads(r.read()), r.status
+
+
+def post(path, body=None):
+    data = json.dumps(body or {}).encode()
+    req = urllib.request.Request(BASE + path, data=data,
+                                headers={"Content-Type": "application/json"})
+    try:
+        with urllib.request.urlopen(req, timeout=10) as r:
+            return json.loads(r.read()), r.status
+    except urllib.error.HTTPError as e:
+        return json.loads(e.read()), e.code
+
+
+# ── Theme settings ───────────────────────────────────────────────────────
+
+def test_settings_default_theme():
+    """Default theme should be 'dark'."""
+    d, status = get("/api/settings")
+    assert status == 200
+    assert d.get("theme") == "dark"
+
+
+def test_settings_set_theme_light():
+    """Setting theme to 'light' should persist and round-trip."""
+    try:
+        d, status = post("/api/settings", {"theme": "light"})
+        assert status == 200
+        d2, _ = get("/api/settings")
+        assert d2.get("theme") == "light"
+    finally:
+        # Reset to dark
+        post("/api/settings", {"theme": "dark"})
+
+
+def test_settings_set_theme_solarized():
+    """Setting theme to 'solarized' should persist."""
+    try:
+        post("/api/settings", {"theme": "solarized"})
+        d, _ = get("/api/settings")
+        assert d.get("theme") == "solarized"
+    finally:
+        post("/api/settings", {"theme": "dark"})
+
+
+def test_settings_set_theme_monokai():
+    """Setting theme to 'monokai' should persist."""
+    try:
+        post("/api/settings", {"theme": "monokai"})
+        d, _ = get("/api/settings")
+        assert d.get("theme") == "monokai"
+    finally:
+        post("/api/settings", {"theme": "dark"})
+
+
+def test_settings_set_theme_nord():
+    """Setting theme to 'nord' should persist."""
+    try:
+        post("/api/settings", {"theme": "nord"})
+        d, _ = get("/api/settings")
+        assert d.get("theme") == "nord"
+    finally:
+        post("/api/settings", {"theme": "dark"})
+
+
+def test_settings_set_theme_slate():
+    """Setting theme to 'slate' should persist."""
+    try:
+        post("/api/settings", {"theme": "slate"})
+        d, _ = get("/api/settings")
+        assert d.get("theme") == "slate"
+    finally:
+        post("/api/settings", {"theme": "dark"})
+
+
+def test_settings_custom_theme_accepted():
+    """Custom theme names should be accepted (no enum gate)."""
+    try:
+        d, status = post("/api/settings", {"theme": "my-custom-theme"})
+        assert status == 200
+        d2, _ = get("/api/settings")
+        assert d2.get("theme") == "my-custom-theme"
+    finally:
+        post("/api/settings", {"theme": "dark"})
+
+
+def test_theme_does_not_break_other_settings():
+    """Setting theme should not disturb other settings."""
+    d_before, _ = get("/api/settings")
+    send_key_before = d_before.get("send_key")
+    try:
+        post("/api/settings", {"theme": "nord"})
+        d_after, _ = get("/api/settings")
+        assert d_after.get("send_key") == send_key_before
+        assert d_after.get("theme") == "nord"
+    finally:
+        post("/api/settings", {"theme": "dark"})
+
+
+def test_theme_survives_round_trip():
+    """Theme set via POST should appear in subsequent GET."""
+    try:
+        post("/api/settings", {"theme": "monokai"})
+        d, status = get("/api/settings")
+        assert status == 200
+        assert d["theme"] == "monokai"
+    finally:
+        post("/api/settings", {"theme": "dark"})
Author	SHA1	Message	Date
nesquena-hermes	cf3ccb0666	docs: v0.34.3 release notes and version bump Some checks failed Release & Docker / release (push) Has been cancelled Details Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>	2026-04-04 22:12:37 -07:00
Nathan Esquenazi	2f58724863	fix: light theme final polish -- sidebar, roles, chips, all interactive elements * fix: light theme sidebar, roles, chips, active states -- full polish Comprehensive light theme overrides for every remaining hardcoded dark-theme element: Sidebar: - Session items: warm dark text instead of faint muted gray - Active session: blue accent (matching --blue) instead of washed-out gold - Pin stars/headers: deep gold #996b15 instead of bright yellow #f5c542 - Session actions gradient: light bg instead of dark overlay - Search input: dark borders, proper focus ring Role labels: - You: solid #2d6fa3 blue instead of faint rgba(124,185,255,0.65) - Hermes: solid #8a6520 gold instead of faint rgba(201,168,76,0.6) - Role icons: proper bg/border contrast for light backgrounds Chips and interactive elements: - Project chips: dark borders, dark hover states - Model chip: blue accent matching theme - New chat button: blue accent borders - All hover states: rgba(0,0,0,.XX) instead of rgba(255,255,255,.XX) Other surfaces: - Composer box borders and focus ring - Tool cards, cron items, suggestions - File tree hover, preview badges - Profile/workspace dropdown hovers - Settings, nav tooltips Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * docs: update THEMES.md with all current CSS variables Added typography variables (--strong, --em, --code-text, --code-inline-bg, --pre-text) to the custom theme guide. Added note about light theme selector overrides needed for hover/border contrast. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-04 22:11:42 -07:00
nesquena-hermes	a3f4ad7111	docs: update THEMES.md for theme contract Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>	2026-04-04 22:05:50 -07:00
nesquena-hermes	0ed2981205	docs: v0.34.2 release notes and version bump Some checks failed Release & Docker / release (push) Has been cancelled Details Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>	2026-04-04 22:00:15 -07:00
Nathan Esquenazi	5762aaafba	fix: theme-aware text colors -- light mode readable, all themes polished Added 5 new CSS variables to every theme block: --strong, --em, --code-text, --code-inline-bg, --pre-text Light theme: dark brown text, warm gray italics, saddle brown code on subtle bg. All previously invisible text is now readable. All themes get palette-appropriate values matching their design language (Solarized orange, Monokai yellow, Nord green, etc). Also fixed: remaining white borders to var(--border), light scrollbar, code-bg contrast, settings overlay, approval card text. Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-04 21:59:12 -07:00
nesquena-hermes	3294e54e00	docs: v0.34.1 release notes and version bump Some checks failed Release & Docker / release (push) Has been cancelled Details Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>	2026-04-04 21:45:23 -07:00
Nathan Esquenazi	2eddef3275	fix: replace 30+ hardcoded dark-navy colors with theme CSS variables Root cause: topbar, dropdowns, toast, approval card, tooltips, main area, inputs, and hover states all used hardcoded rgba(22,33,62), #1a2535, etc. These only looked correct on the Dark theme — all other themes showed jarring dark-navy elements on non-navy backgrounds. New CSS variables added to every theme block: - --surface: dropdowns, popups, toast, approval card - --topbar-bg: topbar background - --main-bg: main chat area background - --input-bg: subtle input/button backgrounds - --hover-bg: hover state backgrounds - --focus-ring / --focus-glow: focus border and box-shadow Light theme now has proper light-colored surfaces, inputs, and hover states instead of invisible white-on-white. THEMES.md updated with all new variables documented. Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-04 21:43:53 -07:00
Nathan Esquenazi	7bcd6623e9	Merge pull request #98 from nesquena/sprint-26-themes Some checks failed Release & Docker / release (push) Has been cancelled Details Sprint 26: Pluggable UI themes — dark, light, solarized, monokai, nord	2026-04-04 21:13:10 -07:00
Nathan Esquenazi	82a942a2b1	docs: v0.34 release — themes CHANGELOG, README, add light to picker - CHANGELOG: v0.34 Sprint 26 entry (6 themes, /theme command, settings UX) - README: themes section, updated slash commands, THEMES.md in docs list - THEMES.md: added Slate to theme table, matches actual CSS/dropdown - commands.js: added 'light' to /theme valid list, updated description - index.html: added Light option to theme dropdown, version v0.34 - SPRINTS/CHANGELOG footers updated to v0.34 / 433 tests Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-04 21:13:01 -07:00
Nathan Esquenazi	805fa296c8	fix: cut light theme from picker, shorten Save button label	2026-04-05 04:06:02 +00:00
Nathan Esquenazi	b8b063f325	fix: settings panel taller -- show Save button without scrolling	2026-04-05 04:01:56 +00:00
Nathan Esquenazi	882fc947e5	fix: settings unsaved-changes guard, add Slate theme, improve Light theme Unsaved-changes guard: - _closeSettingsPanel() intercepts all three close paths (X button, overlay click, Escape key) and checks _settingsDirty before closing - If dirty: shows inline 'Unsaved changes' bar with Save & Close / Discard - Discard reverts the live theme preview to what it was when panel opened - _markSettingsDirty() wired to all inputs via addEventListener in loadSettingsPanel() - saveSettings() now resets dirty flag and hides the bar on successful save Theme improvements: - Add 'Slate' theme: warm charcoal (#2b2d30 bg), a softer/lighter dark option that sits between Dark and the full light themes - Rework 'Light' theme: replace pure white (#f5f5f7) with warm off-white (#f0ede8) -- warmer, lower contrast, less harsh on most displays - Update /theme command to include 'slate' in valid list - Add test_settings_set_theme_slate() to test_sprint26.py	2026-04-05 04:00:24 +00:00
Nathan Esquenazi	96137750a4	feat: Sprint 26 — pluggable UI themes (dark, light, solarized, monokai, nord) Five built-in themes with instant switching, persistent preference, and zero-flicker loading. Custom themes are pure CSS additions. Theme system: - CSS variable overrides via :root[data-theme="name"] blocks - Flicker prevention: inline <script> reads localStorage before stylesheet parses, preventing dark-flash on light-mode users - Server-side persistence via settings.json (theme field) - Boot.js syncs server preference to DOM + localStorage Built-in themes: - Dark (default): deep navy/indigo, muted blue accents - Light: clean white/gray, high contrast, scrollbar overrides - Solarized Dark: teal background, warm accents - Monokai: warm dark, green/pink accents - Nord: arctic blue-gray, calm and minimal UI integration: - Settings panel: theme dropdown with instant live preview - /theme slash command: /theme dark\|light\|solarized\|monokai\|nord - No enum constraint on theme setting — custom themes just work Documentation: - THEMES.md: how to switch themes, create custom themes, contribute 8 new tests. All 408 tests pass. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-04 20:48:05 -07:00
nesquena-hermes	d10871c0e4	docs: Sprint 26 themes plan + Sprint 12/13/23/24 cleanup - Sprint 12 and 13 headers: add missing (COMPLETED) labels - Sprint 23 header: corrected from 'Profile/Workspace/Model Coherence' to 'Agentic Transparency + Context Visibility' (what it actually shipped) - Sprint 24 Track C: removed stale self-referential cleanup items that are now done - Sprint 26 added: full plan for pluggable UI themes (light/dark/solarized/monokai/nord) including CSS variable architecture, flicker prevention, /theme slash command, settings picker with live preview, and test spec - ROADMAP.md: add v0.32/v0.33 to sprint history table, add Sprint 25/26 to feature checklist - SPRINTS.md footer: add horizon sprint line Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>	2026-04-04 20:36:42 -07:00
nesquena-hermes	6d4c258d90	docs: v0.33 release notes and version bump Some checks failed Release & Docker / release (push) Has been cancelled Details Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>	2026-04-04 20:09:59 -07:00
nesquena-hermes	c312dd36ca	fix: state_sync.py -- correct class name, constructor type, title API, connection leak Three bugs found during review: 1. Class is SessionDB not HermesState -- would silently no-op on every install 2. SessionDB.__init__ takes Path not str -- would crash with AttributeError 3. _execute_write() takes a callable not SQL+params -- wrong signature. Replaced with public set_session_title() API. 4. Each call opened a persistent SQLite connection and never closed it. Added try/finally db.close() to prevent WAL leak under sustained load. Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>	2026-04-04 20:08:20 -07:00
Nathan Esquenazi	bb595afde9	feat: opt-in state.db sync for /insights visibility (#92 ) WebUI sessions were invisible to 'hermes /insights' because the WebUI bypasses the gateway and calls AIAgent.run_conversation() directly, never writing to state.db. New 'Sync usage to /insights' setting (default: off) that mirrors WebUI session metadata (tokens, cost, model, title) into state.db after each turn. Uses absolute token counts to avoid double-counting. Components: - api/state_sync.py: bridge module with sync_session_start() and sync_session_usage(). Uses ensure_session() (idempotent) and update_token_counts(absolute=True). All wrapped in try/except. - api/config.py: new 'sync_to_insights' boolean setting - api/streaming.py: calls sync_session_usage() after s.save() - api/routes.py: same for the non-streaming chat path - Settings UI: checkbox toggle with description Default off because: - Writing to state.db while CLI/gateway also writes could cause WAL lock contention on busy systems - Some users may not want WebUI sessions in /insights stats Closes #92 Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-04 20:07:05 -07:00