feat: web UI dashboard for managing Hermes Agent (#8756)

* feat: web UI dashboard for managing Hermes Agent (salvage of #8204/#7621)

Adds an embedded web UI dashboard accessible via `hermes web`:
- Status page: agent version, active sessions, gateway status, connected platforms
- Config editor: schema-driven form with tabbed categories, import/export, reset
- API Keys page: set, clear, and view redacted values with category grouping
- Sessions, Skills, Cron, Logs, and Analytics pages

Backend:
- hermes_cli/web_server.py: FastAPI server with REST endpoints
- hermes_cli/config.py: reload_env() utility for hot-reloading .env
- hermes_cli/main.py: `hermes web` subcommand (--port, --host, --no-open)
- cli.py / commands.py: /reload slash command for .env hot-reload
- pyproject.toml: [web] optional dependency extra (fastapi + uvicorn)
- Both update paths (git + zip) auto-build web frontend when npm available

Frontend:
- Vite + React + TypeScript + Tailwind v4 SPA in web/
- shadcn/ui-style components, Nous design language
- Auto-refresh status page, toast notifications, masked password inputs

Security:
- Path traversal guard (resolve().is_relative_to()) on SPA file serving
- CORS localhost-only via allow_origin_regex
- Generic error messages (no internal leak), SessionDB handles closed properly

Tests: 47 tests covering reload_env, redact_key, API endpoints, schema
generation, path traversal, category merging, internal key stripping,
and full config round-trip.

Original work by @austinpickett (PR #1813), salvaged by @kshitijk4poor
(PR #7621 → #8204), re-salvaged onto current main with stale-branch
regressions removed.

* fix(web): clean up status page cards, always rebuild on `hermes web`

- Remove config version migration alert banner from status page
- Remove config version card (internal noise, not surfaced in TUI)
- Reorder status cards: Agent → Gateway → Active Sessions (3-col grid)
- `hermes web` now always rebuilds from source before serving,
  preventing stale web_dist when editing frontend files

* feat(web): full-text search across session messages

- Add GET /api/sessions/search endpoint backed by FTS5
- Auto-append prefix wildcards so partial words match (e.g. 'nimb' → 'nimby')
- Debounced search (300ms) with spinner in the search icon slot
- Search results show FTS5 snippets with highlighted match delimiters
- Expanding a search hit auto-scrolls to the first matching message
- Matching messages get a warning ring + 'match' badge
- Inline term highlighting within Markdown (text, bold, italic, headings, lists)
- Clear button (x) on search input for quick reset

---------

Co-authored-by: emozilla <emozilla@nousresearch.com>

web/src/components/ui/card.tsx

@@ -0,0 +1,29 @@
+import { cn } from "@/lib/utils";
+
+export function Card({ className, ...props }: React.HTMLAttributes<HTMLDivElement>) {
+  return (
+    <div
+      className={cn(
+        "border border-border bg-card/80 text-card-foreground",
+        className,
+      )}
+      {...props}
+    />
+  );
+}
+
+export function CardHeader({ className, ...props }: React.HTMLAttributes<HTMLDivElement>) {
+  return <div className={cn("flex flex-col gap-1.5 p-4 border-b border-border", className)} {...props} />;
+}
+
+export function CardTitle({ className, ...props }: React.HTMLAttributes<HTMLHeadingElement>) {
+  return <h3 className={cn("font-expanded text-sm font-bold tracking-[0.08em] uppercase blend-lighter", className)} {...props} />;
+}
+
+export function CardDescription({ className, ...props }: React.HTMLAttributes<HTMLParagraphElement>) {
+  return <p className={cn("font-display text-xs text-muted-foreground", className)} {...props} />;
+}
+
+export function CardContent({ className, ...props }: React.HTMLAttributes<HTMLDivElement>) {
+  return <div className={cn("p-4", className)} {...props} />;
+}