chore: add roam CI workflow, fitness config, formatting, beads sync

- Add .github/workflows/roam.yml for automated codebase indexing
- Add .roam/fitness.yaml with architectural fitness rules
- Reformat show.rs and vector.rs (rustfmt line-wrapping only, no logic)
- Sync beads issue tracker

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/roam.yml

@@ -0,0 +1,21 @@
+name: Roam Code Analysis
+on:
+  pull_request:
+    branches: [main, master]
+permissions:
+  contents: read
+  pull-requests: write
+jobs:
+  roam:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+      - run: pip install roam-code
+      - run: roam index
+      - run: roam fitness
+      - run: roam pr-risk --json

.roam/fitness.yaml

@@ -0,0 +1,11 @@
+rules:
+  - name: No circular imports in core
+    type: dependency
+    source: "src/**"
+    forbidden_target: "tests/**"
+    reason: "Production code should not import test modules"
+  - name: Complexity threshold
+    type: metric
+    metric: cognitive_complexity
+    threshold: 30
+    reason: "Functions above 30 cognitive complexity need refactoring"

src/cli/commands/show.rs

@@ -1228,9 +1228,19 @@ mod tests {
         .unwrap();
     }
 
-    fn seed_discussion_with_notes(conn: &Connection, issue_id: i64, project_id: i64, user_notes: usize, system_notes: usize) {
+    fn seed_discussion_with_notes(
+        conn: &Connection,
+        issue_id: i64,
+        project_id: i64,
+        user_notes: usize,
+        system_notes: usize,
+    ) {
         let disc_id: i64 = conn
-            .query_row("SELECT COALESCE(MAX(id), 0) + 1 FROM discussions", [], |r| r.get(0))
+            .query_row(
+                "SELECT COALESCE(MAX(id), 0) + 1 FROM discussions",
+                [],
+                |r| r.get(0),
+            )
             .unwrap();
         conn.execute(
             "INSERT INTO discussions (id, gitlab_discussion_id, project_id, issue_id, noteable_type, first_note_at, last_note_at, last_seen_at)

src/search/vector.rs

@@ -150,7 +150,10 @@ mod tests {
     #[test]
     fn test_knn_k_reproduces_original_bug_scenario() {
         let k = compute_knn_k(1500, 1);
-        assert!(k <= SQLITE_VEC_KNN_MAX, "k={k} exceeded 4096 at RECALL_CAP with 1 chunk");
+        assert!(
+            k <= SQLITE_VEC_KNN_MAX,
+            "k={k} exceeded 4096 at RECALL_CAP with 1 chunk"
+        );
     }
 
     #[test]