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

.gitignore

@@ -88,3 +88,11 @@ sync_repos_report*.txt
 # Crash recovery artifacts
 ai-cli-crash-capture/
 SONNET-TASKS.md
+target/
+node_modules/
+_build/
+deps/
+.elixir_ls/
+.cache/
+build/
+dist/