perf(ci): restrict release dry-run trigger, remove duplicate dashboard-test (#3118, #3119)

Two CI performance optimizations:
- Restrict release dry-run to release/** branches + workflow_dispatch (closes #3118)
- Remove duplicate dashboard-test job (closes #3119)
~11-17 min saved per CI cycle, no coverage loss.

Author: OneStepAt4time

.github/workflows/ci.yml

@@ -365,19 +365,6 @@ jobs:
           .env$|\\.log$|\\.tmp$|\\.bak$|\\.swp$)' || true)\nif [ -n \"$FOUND\" ]; then\n\
           \  echo \"::error::Blacklisted files found in git tracking\"\n  echo \"$FOUND\"\
           \n  exit 1\nfi\necho \"Audit passed - no blacklisted files found\"\n"
-  dashboard-test:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-      - name: Setup Node.js
-        uses: actions/setup-node@v6
-        with:
-          node-version: '22'
-          cache: npm
-      - name: Install dashboard dependencies
-        run: cd dashboard && npm ci
-      - name: Run dashboard tests
-        run: cd dashboard && npx vitest run
   dashboard-e2e:
     if: github.event_name == 'pull_request' && github.base_ref == 'develop'
     runs-on: ubuntu-latest

.github/workflows/release-dry-run.yml

@@ -4,7 +4,6 @@ on:
   workflow_dispatch:
   push:
     branches:
-      - develop
       - 'release/**'
     paths:
       - '.github/workflows/release*.yml'
@@ -20,7 +19,6 @@ on:
       - 'charts/aegis/**'
   pull_request:
     branches:
-      - develop
       - 'release/**'
     paths:
       - '.github/workflows/release*.yml'