feat: add per-project language bundles + elisp ruleset

Introduces a second install mode alongside the existing global symlinks:
per-project language bundles that copy a language-specific Claude Code
setup (rules, hooks, settings, pre-commit) into a target project.

Layout additions:
  languages/elisp/       - Emacs Lisp bundle (rules, hooks, settings, CLAUDE.md)
  scripts/install-lang.sh - shared install logic

Makefile additions:
  make help              - unified help text
  make install-lang LANG=<lang> PROJECT=<path> [FORCE=1]
  make install-elisp PROJECT=<path> [FORCE=1]   (shortcut)
  make list-languages    - show available bundles

Elisp bundle contents:
  - CLAUDE.md template (seed on first install, preserved on update)
  - .claude/rules/elisp.md, elisp-testing.md, verification.md
  - .claude/hooks/validate-el.sh (check-parens, byte-compile, run matching tests)
  - .claude/settings.json (permission allowlist, hook wiring)
  - githooks/pre-commit (secret scan + staged-file paren check)
  - gitignore-add.txt (append .claude/settings.local.json)

Hooks use \$CLAUDE_PROJECT_DIR with a script-relative fallback, so the
same bundle works on any machine or clone path. Install activates git
hooks via core.hooksPath=githooks automatically. Re-running install is
idempotent; CLAUDE.md is never overwritten without FORCE=1.

1 files changed, 34 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 92933b7..e42662e 100644
--- a/Makefile
+++ b/Makefile
@@ -2,8 +2,27 @@ SKILLS_DIR := $(HOME)/.claude/skills
 RULES_DIR := $(HOME)/.claude/rules
 SKILLS := c4-analyze c4-diagram debug add-tests respond-to-review review-pr fix-issue security-check
 RULES := $(wildcard claude-rules/*.md)
+LANGUAGES := $(notdir $(wildcard languages/*))
 
-.PHONY: install uninstall list
+.PHONY: help install uninstall list \
+        install-lang list-languages install-elisp
+
+help:
+	@echo "rulesets — Claude Code skills, rules, and language bundles"
+	@echo ""
+	@echo "  Global install (symlinks into ~/.claude/):"
+	@echo "    make install             - Install skills and rules globally"
+	@echo "    make uninstall           - Remove the symlinks"
+	@echo "    make list                - Show install status"
+	@echo ""
+	@echo "  Per-project language rulesets:"
+	@echo "    make install-lang LANG=<lang> PROJECT=<path> [FORCE=1]"
+	@echo "    make install-elisp PROJECT=<path> [FORCE=1]   (shortcut)"
+	@echo "    make list-languages     - Show available language bundles"
+	@echo ""
+	@echo "  FORCE=1 overwrites an existing CLAUDE.md (other files always overwrite)."
+	@echo ""
+	@echo "Available languages: $(LANGUAGES)"
 
 install:
 	@mkdir -p $(SKILLS_DIR) $(RULES_DIR)
@@ -77,3 +96,17 @@ list:
 			echo "  - $$name"; \
 		fi \
 	done
+
+# --- Per-project language rulesets ---
+
+list-languages:
+	@echo "Available language rulesets (languages/):"
+	@for lang in $(LANGUAGES); do echo "  - $$lang"; done
+
+install-lang:
+	@test -n "$(LANG)"    || { echo "ERROR: set LANG=<language> (try: make list-languages)"; exit 1; }
+	@test -n "$(PROJECT)" || { echo "ERROR: set PROJECT=<path>"; exit 1; }
+	@bash scripts/install-lang.sh "$(LANG)" "$(PROJECT)" "$(FORCE)"
+
+install-elisp:
+	@$(MAKE) install-lang LANG=elisp PROJECT="$(PROJECT)" FORCE="$(FORCE)"