chore: stop publishing local agent tooling and instructions

CLAUDE.md, the .claude/ directory, and the agent-generated planning docs
under docs/plans/ and docs/superpowers/ are local development aids, not
part of the shipped project. Untrack them and add them to .gitignore so
they stay local.

Drops the post-commit audit-docs hook from prek.toml, since the script it
invoked (.claude/audit-docs.sh) is no longer part of the repo.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.gitignore

@@ -19,3 +19,9 @@ research/
 4_char_all
 all_hashes.enabled
 some_histories
+
+# Local agent tooling and instructions - intentionally not published
+CLAUDE.md
+.claude/
+docs/plans/
+docs/superpowers/

prek.toml

@@ -55,18 +55,9 @@ stages = ["pre-push"]
 pass_filenames = false
 always_run = true
 
-[[repos.hooks]]
-id = "audit-docs"
-name = "audit-docs"
-entry = "bash .claude/audit-docs.sh HEAD"
-language = "system"
-stages = ["post-commit"]
-pass_filenames = false
-always_run = true
-
 # General hygiene hooks (mirrors hashview's .pre-commit-config.yaml). These run
-# at the pre-commit stage, so `prek install` must include `--hook-type pre-commit`
-# (see CLAUDE.md). Auto-fixers modify files in place; re-stage and commit again.
+# at the pre-commit stage, so `prek install` must include `--hook-type pre-commit`.
+# Auto-fixers modify files in place; re-stage and commit again.
 [[repos]]
 repo = "https://github.com/pre-commit/pre-commit-hooks"
 rev = "v5.0.0"