chore: sync local state

Estate-wide chore-drift sweep committing accumulated local state
(gitignore, lockfiles, dotfile tweaks, workflow SHA bumps, A2ML
migration drift, doc sweeps) so the estate-wide Dependabot fix
propagation can proceed without skipping this repo.

No source-file edits were in scope for this commit; repos with
in-flight source work were excluded and kicked back for manual
review.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

.github/workflows/boj-build.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Trigger BoJ Server (Casket/ssg-mcp)
         run: |

.gitignore

@@ -85,3 +85,11 @@ ai-cli-crash-capture/
 *.cmt
 *.cmti
 *.cmi
+target/
+node_modules/
+_build/
+deps/
+.elixir_ls/
+.cache/
+build/
+dist/