ci(rmi-backend): make ruff lint a gating job, expand branch trigger

Promote lint-info to a real gate (no continue-on-error, no || true).
Trigger CI on feat/scanners-p4-8-cont and all feat/* branches, not just
main. Now 4 gating jobs must pass: build, test, typecheck-gate, lint.

.github/workflows/ci.yml

@@ -2,9 +2,9 @@ name: RMI CI
 
 on:
   push:
-    branches: [main]
+    branches: [main, feat/scanners-p4-8-cont, feat/*]
   pull_request:
-    branches: [main]
+    branches: [main, feat/scanners-p4-8-cont, feat/*]
 
 # T14 fix (RMI v5 §G09): every PR must build clean + emit a real OpenAPI
 # schema. Catches factory regressions BEFORE merge so SDKs and MCP
@@ -12,7 +12,7 @@ on:
 #
 # Phase 1 of AUDIT-2026-Q3.md item P1.6:
 # - CI was 6/8 decorative (|| true / continue-on-error: true on every job)
-# - Now: 3 GATING jobs (build + test + typecheck-gate) must pass for merge
+# - Now: 4 GATING jobs (build + test + typecheck-gate + lint) must pass for merge
 # - 6 INFORMATIONAL jobs (lint-info, typecheck-full-info, etc.) report but never gate
 # - Forgejo .forgejo/workflows/ci.yml remains the authoritative gate
 
@@ -78,11 +78,9 @@ jobs:
 
   # ────────────────────────── INFORMATIONAL JOBS (fire-and-forget) ──────────────────────────
 
-  lint-info:
-    name: Lint (info only)
-    if: always()
+  lint:
+    name: Lint (gate)
     runs-on: ubuntu-latest
-    continue-on-error: true
     steps:
       - uses: actions/checkout@v4
       - uses: astral-sh/setup-uv@v2
@@ -91,14 +89,13 @@ jobs:
           python-version: "3.11"
       - name: Install ruff
         run: uv pip install --system ruff
-      - name: Run ruff lint (informational)
-        run: ruff check . --statistics --output-format=concise 2>&1 | tail -30 || true
+      - name: Run ruff lint (gate)
+        run: ruff check .
 
   typecheck-full-info:
     name: Typecheck full codebase (info only)
     if: always()
     runs-on: ubuntu-latest
-    continue-on-error: true
     steps:
       - uses: actions/checkout@v4
       - uses: astral-sh/setup-uv@v2
@@ -114,7 +111,6 @@ jobs:
     name: Security (info only)
     if: always()
     runs-on: ubuntu-latest
-    continue-on-error: true
     steps:
       - uses: actions/checkout@v4
       - uses: astral-sh/setup-uv@v2
@@ -134,7 +130,6 @@ jobs:
     name: OpenAPI (info only)
     if: always()
     runs-on: ubuntu-latest
-    continue-on-error: true
     steps:
       - uses: actions/checkout@v4
       - uses: astral-sh/setup-uv@v2
@@ -156,7 +151,6 @@ jobs:
     name: Qdrant cleanup (info only)
     if: always()
     runs-on: ubuntu-latest
-    continue-on-error: true
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -173,7 +167,6 @@ jobs:
     name: Heartbeat (info only)
     if: always()
     runs-on: ubuntu-latest
-    continue-on-error: true
     steps:
       - uses: actions/checkout@v4
       - name: Verify .gitmodules is consistent