version: mark CoderAI 0.1.0 and surface it in the admin web UI

Add a canonical codai.__version__ = "0.1.0" as the single source of truth (kept
separate from Config.version, which is the config-schema/migration version). The
admin template renderer injects it as coderai_version, and base.html shows it as a
small "v0.1.0" pill next to the CoderAI logo on every page.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

codai/__init__.py

@@ -14,6 +14,10 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <https://www.gnu.org/licenses/>.
 
+# Canonical product version for CoderAI — single source of truth. Both the API
+# metadata and the admin web UI read from here.
+__version__ = "0.1.0"
+
 # Configure the CUDA caching allocator BEFORE torch is imported anywhere.
 # expandable_segments lets the allocator return freed pages to the driver even
 # from partially-used segments.  Without it, a single small live tensor (e.g. a

codai/admin/routes.py

@@ -100,8 +100,10 @@ def _tmpl(request: Request, name: str, ctx: dict = None):
     picked up on a normal reload instead of being masked by the browser cache.
     """
     from codai.api.urlutils import get_public_prefix
+    from codai import __version__ as _coderai_version
     c = ctx or {}
     c.setdefault("root_path", get_public_prefix(request))
+    c.setdefault("coderai_version", _coderai_version)
     resp = templates.TemplateResponse(request, name, c)
     resp.headers["Cache-Control"] = "no-store, no-cache, must-revalidate, max-age=0"
     resp.headers["Pragma"] = "no-cache"

codai/admin/static/style.css

@@ -54,6 +54,7 @@ body,.table-wrap,.modal-box,.chat-messages,.studio .model-list,.studio .chat-msg
   font-size:9px;font-weight:700;color:#fff;letter-spacing:-.01em;
 }
 .nav-logo-name{font-size:13px;font-weight:700;letter-spacing:-.01em}
+.nav-logo-version{margin-left:6px;padding:1px 6px;border-radius:999px;font-size:10px;font-weight:600;line-height:1.4;color:var(--muted,#8b8f98);background:rgba(127,127,127,.14);letter-spacing:.01em}
 
 /* nav links */
 .nav-links{display:flex;align-items:center;gap:1px}

codai/admin/templates/base.html

@@ -21,6 +21,7 @@
       <a href="{{ root_path }}/admin" class="nav-logo">
         <div class="nav-logo-mark">AI</div>
         <span class="nav-logo-name">CoderAI</span>
+        {% if coderai_version %}<span class="nav-logo-version" title="CoderAI version">v{{ coderai_version }}</span>{% endif %}
       </a>
       <div class="nav-links">
         <a href="{{ root_path }}/admin" class="nav-link {% if request.url.path == '/admin' %}active{% endif %}">Overview</a>