Slice 13: repo search + filtering (+ no-cache dev assets)

<repo-list> gains a search box (name/path) and Dirty/Ahead-behind filter chips with an N-of-M count; filtering is client-side and the state persists in localStorage (gitmanager.repolist.filters, §4). Refresh/selection re-apply filters. cmd/server sends Cache-Control: no-cache for /components and /static so hot-reloaded asset edits show on reload. Server-verified (curl); live click-through pending an unresponsive browser pane.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

components/repo-list/repo-list.md

@@ -9,7 +9,11 @@ component pattern the rest of the UI follows.
 
 ## Public surface
 - **Tag:** `<repo-list>`
-- **Attributes/properties:** none yet.
+- **Attributes/properties:** none.
+- **Search + filter:** a search box (matches name/path, case-insensitive) plus
+  "Dirty" and "Ahead/behind" toggle chips, with a "N of M" count. Filtering is
+  client-side over the fetched list; the state persists per-viewer in
+  `localStorage["gitmanager.repolist.filters"]` (§4).
 - **Fetches:** `GET /api/repos` on connect and every 15s (in-flight request is
   aborted on refresh and on disconnect).
 - **Emits:** `repo:select` — a `CustomEvent` (bubbles + composed) whose `detail`
@@ -26,6 +30,8 @@ component pattern the rest of the UI follows.
   readable by Claude via `get_active_project`. Fire-and-forget.
 - 2026-09-20: right-clicking a repo emits `repo:contextmenu` `{repo, x, y}` for
   `<repo-menu>` (§6). Right-click does not change the selection/active project.
+- 2026-09-20: added search + "Dirty"/"Ahead-behind" filter chips with a count,
+  persisted in localStorage; filtering is client-side (slice 13).
 
 ## Notes / gotchas
 - Uses shared design tokens (`--git-*`, `--surface-*`, `--radius*`) for all