[Phase 3.1] Agent entity types + metadata structs (#47)

## Changes
- `crates/mem-core/src/entity.rs` — Added AgentPrompt, AgentSkill, AgentDecision to EntityType enum
- `crates/mem-core/src/agent_entity.rs` — New module (280 LOC): metadata structs, factories, stat updaters
- `crates/mem-core/src/lib.rs` — Module registration + exports

## Agent Entity Types
- **AgentPrompt**: template, target_model, task_category, usage_count, avg_quality, version
- **AgentSkill**: description, trigger_patterns, success_rate, invocation_count, avg_latency_ms
- **AgentDecision**: action, reasoning, alternatives, confidence, outcome (success/quality/feedback)

## Validation
- 8 new tests pass (factories, stats, round-trip, serialization)
- 174 total lib tests pass
- `cargo build --release` cleanReviewed-on: #47

Co-authored-by: rock <[email protected]>

.gitea/workflows/build.yaml

@@ -1,17 +1,28 @@
-name: PR Check
+name: CI
 
 on:
+  push:
+    branches: [main]
   pull_request:
     branches: [main]
+  workflow_dispatch:
 
 env:
+  REGISTRY: forgejo.riotpiao.com
+  IMAGE: forgejo.riotpiao.com/riotpiao-poimen/poimen-memory
+  DOCKER_HOST: tcp://localhost:2375
   SQLX_OFFLINE: "true"
 
 jobs:
-  check:
-    name: Build & Test
+  ci:
+    name: CI
     runs-on: rust
     steps:
+      - name: Install Node.js and Docker
+        run: |
+          apt-get update
+          apt-get install -y nodejs docker.io
+
       - name: Checkout code
         uses: actions/checkout@v4
 
@@ -23,3 +34,29 @@ jobs:
 
       - name: Cargo clippy
         run: cargo clippy --all --all-targets -- -D warnings 2>&1 | tail -50 || true
+
+      - name: Clean build artifacts before Docker
+        run: cargo clean
+
+      - name: Get short SHA
+        id: sha
+        run: echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
+
+      - name: Registry login
+        run: |
+          echo "${REGISTRY_TOKEN}" | docker login "${REGISTRY}" \
+            --username "${REGISTRY_USER}" --password-stdin
+        env:
+          REGISTRY_USER: ${{ secrets.FORGEJO_REGISTRY_USER }}
+          REGISTRY_TOKEN: ${{ secrets.FORGEJO_REGISTRY_TOKEN }}
+
+      - name: Build and push Docker image (SHA tag only)
+        run: |
+          docker build --no-cache --progress=plain \
+            -t "${IMAGE}:${{ steps.sha.outputs.short_sha }}" \
+            -f Dockerfile .
+          docker push "${IMAGE}:${{ steps.sha.outputs.short_sha }}"
+          echo "Pushed: ${IMAGE}:${{ steps.sha.outputs.short_sha }}"
+
+      - name: Prune unused images
+        run: docker image prune -a --force 2>&1 | tail -3 || true

.gitea/workflows/deploy.yaml

@@ -9,11 +9,10 @@ env:
   REGISTRY: forgejo.riotpiao.com
   IMAGE: forgejo.riotpiao.com/riotpiao-poimen/poimen-memory
   DOCKER_HOST: tcp://localhost:2375
-  SQLX_OFFLINE: "true"
 
 jobs:
   deploy:
-    name: Build & Push Image
+    name: Tag & Push Latest
     runs-on: rust
     steps:
       - name: Install Docker
@@ -34,18 +33,12 @@ jobs:
           REGISTRY_USER: ${{ secrets.FORGEJO_REGISTRY_USER }}
           REGISTRY_TOKEN: ${{ secrets.FORGEJO_REGISTRY_TOKEN }}
 
-      - name: Build Docker image
+      - name: Pull SHA image and tag as latest
         run: |
-          docker build --no-cache --progress=plain \
-            -t "${IMAGE}:${{ steps.sha.outputs.short_sha }}" \
-            -t "${IMAGE}:latest" \
-            -f Dockerfile .
+          docker pull "${IMAGE}:${{ steps.sha.outputs.short_sha }}" && \
+          docker tag "${IMAGE}:${{ steps.sha.outputs.short_sha }}" "${IMAGE}:latest" && \
+          docker push "${IMAGE}:latest" && \
+          echo "Tagged and pushed: ${IMAGE}:latest (from ${{ steps.sha.outputs.short_sha }})"
 
-      - name: Push Docker image
-        run: |
-          docker push "${IMAGE}:${{ steps.sha.outputs.short_sha }}"
-          docker push "${IMAGE}:latest"
-          echo "Pushed: ${IMAGE}:${{ steps.sha.outputs.short_sha }}"
-
-      - name: Prune unused images
+      - name: Prune images
         run: docker image prune -a --force 2>&1 | tail -3 || true