feat: AtoCore Wiki — navigable project knowledge browser

Full wiki interface at /wiki with:

- /wiki — Homepage with project cards, search box, system stats
- /wiki/projects/{name} — Project page with clickable entity links
- /wiki/entities/{id} — Entity detail with relationships as links
- /wiki/search?q=... — Search across entities and memories

Every entity name in a project page links to its detail page.
Entity detail pages show properties, relationships as clickable
links to related entities, and breadcrumb navigation back to the
project and wiki home.

Responsive, dark-mode, mobile-friendly. Card grid for projects.
Generated on-demand from the database — always current, no static
files, source of truth is the DB.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/atocore/api/routes.py

@@ -32,6 +32,12 @@ from atocore.interactions.service import (
     record_interaction,
 )
 from atocore.engineering.mirror import generate_project_overview
+from atocore.engineering.wiki import (
+    render_entity,
+    render_homepage,
+    render_project,
+    render_search,
+)
 from atocore.engineering.service import (
     ENTITY_TYPES,
     RELATIONSHIP_TYPES,
@@ -85,6 +91,33 @@ router = APIRouter()
 log = get_logger("api")
 
 
+# --- Wiki routes (HTML, served first for clean URLs) ---
+
+
+@router.get("/wiki", response_class=HTMLResponse)
+def wiki_home() -> HTMLResponse:
+    return HTMLResponse(content=render_homepage())
+
+
+@router.get("/wiki/projects/{project_name}", response_class=HTMLResponse)
+def wiki_project(project_name: str) -> HTMLResponse:
+    from atocore.projects.registry import resolve_project_name as _resolve
+    return HTMLResponse(content=render_project(_resolve(project_name)))
+
+
+@router.get("/wiki/entities/{entity_id}", response_class=HTMLResponse)
+def wiki_entity(entity_id: str) -> HTMLResponse:
+    html = render_entity(entity_id)
+    if html is None:
+        raise HTTPException(status_code=404, detail="Entity not found")
+    return HTMLResponse(content=html)
+
+
+@router.get("/wiki/search", response_class=HTMLResponse)
+def wiki_search(q: str = "") -> HTMLResponse:
+    return HTMLResponse(content=render_search(q))
+
+
 # --- Request/Response models ---