docs(geoportal): update evaluation + skills with deployment lessons learned

- Portainer CE volume mount pitfall (silent empty directory creation)
- Martin Docker tag format change at v1.0 (v prefix dropped)
- UNKNOWN GEOMETRY TYPE log is normal for views
- Bake-into-image pattern for config files in Portainer deployments
- Updated all implementation prompts with Portainer-safe instructions

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

geoportal/skill-vector-tile-serving.md

@@ -65,11 +65,18 @@ postgres:
         area: float8
 ```
 
+### Docker image tags
+
+Martin changed tag format at v1.0:
+- Pre-1.0: `ghcr.io/maplibre/martin:v0.15.0` (with `v` prefix)
+- Post-1.0: `ghcr.io/maplibre/martin:1.4.0` (no `v` prefix)
+
 ### Docker deployment
 
+**If your orchestrator has access to the full repo** (docker-compose CLI, Docker Swarm with repo checkout):
 ```yaml
 martin:
-  image: ghcr.io/maplibre/martin:v1.4.0
+  image: ghcr.io/maplibre/martin:1.4.0
   command: ["--config", "/config/martin.yaml"]
   environment:
     - DATABASE_URL=postgresql://user:pass@host:5432/db
@@ -79,6 +86,28 @@ martin:
     - "3010:3000"
 ```
 
+**If using Portainer CE or any system that only sees docker-compose.yml** (not full repo):
+Volume mounts for repo files fail silently — Docker creates an empty directory instead.
+Bake config into a custom image:
+
+```dockerfile
+# martin.Dockerfile
+FROM ghcr.io/maplibre/martin:1.4.0
+COPY martin.yaml /config/martin.yaml
+```
+
+```yaml
+martin:
+  build:
+    context: .
+    dockerfile: martin.Dockerfile
+  command: ["--config", "/config/martin.yaml"]
+  environment:
+    - DATABASE_URL=postgresql://user:pass@host:5432/db
+  ports:
+    - "3010:3000"
+```
+
 ### Custom SRID handling
 
 Martin handles non-4326/3857 SRIDs natively. Set `default_srid` globally or `srid` per source. Martin reprojects to Web Mercator (3857) internally for tile envelope calculations. Your PostGIS spatial indexes on the source SRID are used correctly.
@@ -170,12 +199,15 @@ map.addSource('overview', {
 ## Common Pitfalls
 
 1. **Martin auto-discovery drops properties** — always use explicit config with `auto_publish: false`
-2. **Nested views lose SRID metadata** — cast geometry: `geom::geometry(Geometry, 3844)`
-3. **GisUat.geometry is huge** — always `select` to exclude in list queries
-4. **Low-zoom tiles scan entire dataset** — use zoom-dependent simplified views
-5. **No tile cache by default** — add nginx/Varnish in front of any tile server
-6. **tippecanoe requires WGS84** — reproject from custom SRID before generating PMTiles
-7. **PMTiles not incrementally updatable** — full rebuild required on data change
-8. **Tegola doesn't support custom SRIDs** — only 3857/4326, requires ST_Transform everywhere
-9. **pg_tileserv `ST_Estimated_Extent` fails on views** — use materialized views or function layers
-10. **Martin caches source schema at startup** — restart after view DDL changes
+2. **Martin Docker tag format changed at v1.0** — `v0.15.0` (with v) but `1.4.0` (without v). Check actual tags at ghcr.io.
+3. **Portainer CE volume mounts fail silently** — Docker creates empty directory instead of file. Bake configs into images via Dockerfile COPY.
+4. **Martin logs `UNKNOWN GEOMETRY TYPE` for views** — normal for nested views, does not affect tile generation
+5. **Nested views lose SRID metadata** — cast geometry: `geom::geometry(Geometry, 3844)`
+6. **GisUat.geometry is huge** — always `select` to exclude in list queries
+7. **Low-zoom tiles scan entire dataset** — use zoom-dependent simplified views
+8. **No tile cache by default** — add nginx/Varnish in front of any tile server
+9. **tippecanoe requires WGS84** — reproject from custom SRID before generating PMTiles
+10. **PMTiles not incrementally updatable** — full rebuild required on data change
+11. **Tegola doesn't support custom SRIDs** — only 3857/4326, requires ST_Transform everywhere
+12. **pg_tileserv `ST_Estimated_Extent` fails on views** — use materialized views or function layers
+13. **Martin caches source schema at startup** — restart after view DDL changes