docs: add post-audit status report for M5 sweep

Author: hyperpolymath

docs/reports/audit/audit-2026-04-15-post.md

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+# Post-audit Status Report: empty-linter
+- **Date:** 2026-04-15
+- **Status:** Complete (M5 Sweep)
+- **Repo:** /var/mnt/eclipse/repos/empty-linter
+
+## Actions Taken
+1. Standard CI/Workflow Sweep: Added blocker workflows (`ts-blocker.yml`, `npm-bun-blocker.yml`) and updated `Justfile`.
+2. SCM-to-A2ML Migration: Staged and committed deletions of legacy `.scm` files.
+3. Lockfile Sweep: Generated and tracked missing lockfiles where manifests were present.
+4. Static Analysis: Verified with `panic-attack assail`.
+
+## Findings Summary
+- 1 unsafe get calls in src/core/ByteDetector.res
+- 9 unsafe get calls in src/bridge/DotmatrixBridge.res
+- 2 unsafe get calls in src/bindings/Glob.res
+- 11 unsafe get calls in src/cli/Main.res
+- 5 unsafe get calls in tests/ByteDetector_test.res
+- DOM manipulation (innerHTML/document.write) in userscript/empty-linter.user.js
+- 1 HTTP (non-HTTPS) URLs in userscript/empty-linter.user.js
+- 14 TODO/FIXME/HACK markers in contractiles/k9/template-hunt.k9.ncl
+- 1 unsafe get calls in EmptyLinter.res
+- flake.nix declares inputs without narHash, rev pinning, or sibling flake.lock — dependency revision is unpinned in flake.nix
+
+## Final Grade
+- **CRG Grade:** D (Promoted from E/X) - CI and lockfiles are in place.