Narrow AL development to read-only plan guidance

Retain shared knowledge enrichment and review guidance; defer standalone implementation and source-ingestion tracking. Add runner-owned baseline evidence, contract regressions, and explicit consumer/pilot boundaries.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

.github/workflows/development-coverage.yml

@@ -1,26 +0,0 @@
-name: Validate development coverage
-
-on:
-  pull_request:
-    branches: [main]
-  push:
-    branches: [main]
-
-jobs:
-  validate-development-coverage:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check out repository
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-
-      - name: Validate Microsoft Learn coverage ledger
-        shell: pwsh
-        run: ./tools/Test-LearnCoverage.ps1 -Root .
-
-      - name: Validate and prepare development fixtures
-        shell: pwsh
-        run: ./tools/Test-DevelopmentFixtures.ps1 -Root . -PrepareDirectory "$env:RUNNER_TEMP/bcquality-development-fixtures"
-
-      - name: Validate and prepare development-guidance fixtures
-        shell: pwsh
-        run: ./tools/Test-DevelopmentGuidanceFixtures.ps1 -Root . -PrepareDirectory "$env:RUNNER_TEMP/bcquality-development-guidance-fixtures"