project-ux: archive/rename/Open-in-Gitea sidebar context menu, archived projects landing, create-project bootstrap with Gitea remote

Server:
- projects.status + projects.gitea_remote (additive) with CHECK ('open','archived')
- GET /api/projects?status=archived; PATCH /api/projects/:id (rename);
  POST /api/projects/:id/archive | unarchive; POST /api/projects/create
- POST /api/projects ON CONFLICT (path) DO UPDATE SET status='open': re-add
  of archived path restores existing row (preserves id + FKs); already-open
  path returns 409. Detected-repos picker now excludes only status='open'.
- New gitea.ts (createGiteaRepo + GiteaRepoExistsError) and
  project_bootstrap.ts (sanitize name, mkdir under PROJECT_ROOT_WHITELIST,
  git init -b main + first commit with -c user.name/email per-command, optional
  Gitea repo create + remote add + push; all via execFile, no shell).
- 3 new user-stream frames: project_archived, project_unarchived, project_updated.
- sidebar.ts now selects path + gitea_remote and filters status='open'.
- Gitea env added to config.ts (GITEA_BASE_URL, GITEA_USER, GITEA_TOKEN,
  GITEA_SSH_HOST).
- docker-compose.yml /opt mount flipped to rw so create-project can mkdir.
- auto_name.ts gate relaxed from `!== 1` to `< 1` (fires on every turn while
  chat name is empty, not only the first).

Web:
- ProjectSidebar: project rows use proper Radix ContextMenu; items Rename /
  Archive / Open in Gitea. Inline rename, archive confirm dialog.
  Removed obsolete handleRemove + DropdownMenu hack.
- Home: Add-existing + Create-new buttons; collapsible Archived Projects
  section with Restore.
- New CreateProjectModal: name + live folder preview, commit msg, Private/
  Public radio, create-Gitea-remote checkbox, toast on success/warnings.
- New projectUrls.ts giteaUrlFor() — uses gitea_remote when present,
  falls back to convention URL.
- 3 new event types in sessionEvents.ts with idempotent useSidebar handlers.
- SidebarProject extended with path + gitea_remote so Open-in-Gitea can
  resolve without a separate fetch.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/web/src/hooks/useSidebar.ts

@@ -56,6 +56,8 @@ function applyEvent(prev: SidebarResponse, event: import('./sessionEvents').Sess
       const fresh: SidebarProject = {
         id: event.project.id,
         name: event.project.name,
+        path: event.project.path,
+        gitea_remote: event.project.gitea_remote ?? null,
         recent_sessions: [],
         total_sessions: 0,
       };
@@ -165,6 +167,33 @@ function applyEvent(prev: SidebarResponse, event: import('./sessionEvents').Sess
     case 'chat_updated':
     case 'chat_closed':
       return prev;
+    case 'project_archived': {
+      const next = prev.projects.filter((p) => p.id !== event.project_id);
+      if (next.length === prev.projects.length) return prev;
+      return { ...prev, projects: next };
+    }
+    case 'project_unarchived': {
+      if (prev.projects.some((p) => p.id === event.project.id)) return prev;
+      const fresh: SidebarProject = {
+        id: event.project.id,
+        name: event.project.name,
+        path: event.project.path,
+        gitea_remote: event.project.gitea_remote ?? null,
+        recent_sessions: [],
+        total_sessions: 0,
+      };
+      return { ...prev, projects: [fresh, ...prev.projects] };
+    }
+    case 'project_updated': {
+      let changed = false;
+      const projects = prev.projects.map((p) => {
+        if (p.id !== event.project_id) return p;
+        if (p.name === event.name) return p;
+        changed = true;
+        return { ...p, name: event.name };
+      });
+      return changed ? { ...prev, projects } : prev;
+    }
   }
 }