feat(signal): page-signal CLI wrapper + workflows + cross-project broadcast helper

Three coupled additions ship together.

claude-templates/bin/page-signal is a bash wrapper around signal-cli
send. It defaults to --note-to-self for safety. The wrapper supports
--file for attachments, --to <+number> for outbound (explicit per
call, no defaults, no batch), --quiet, and --json. Exit codes: 0
sent, 1 signal-cli failure, 2 usage error, 3 signal-cli not
installed.

claude-templates/.ai/workflows/page-signal.org carries the
discrimination rules and safety rails. When desktop notify covers it,
don't reach for Signal. Long-running task completion is the canonical
case. Outbound to other contacts requires explicit Craig instruction
per send. A known-limitation note covers the current notification
gap. signal-cli registered on Craig's primary number means messages
don't fire notifications until the pending Google Voice registration
lands.

claude-templates/.ai/workflows/cross-project-broadcast.org and its
helper cross-project-broadcast.py fan out a single message file to
every AI project's inbox in one operation. Discovery is
fingerprint-based: any directory under ~/code, ~/projects, ~/.emacs.d
with both .ai/protocols.org and a top-level inbox/ is broadcastable.
Senders are auto-excluded. Verified discovery against 23
broadcastable targets.

Makefile's install target gains a general bin/ loop. The previous
version hardcoded bin/ai. The new version iterates over every
executable under claude-templates/bin/ and symlinks each into
~/.local/bin/. install-hooks (existing Claude hook installer) is
unchanged. install-githooks (sync-check pre-commit hook setup, added
earlier today) is unchanged. The bin/ loop now picks up bin/page-signal
automatically.

INDEX entries for both new workflows landed under Tools and meta.

No bats tests on the new scripts. page-signal was smoke-tested with a
live send. The send succeeded. The notification gap is covered by the
workflow's known-limitation note. cross-project-broadcast.py was
smoke-tested via --list against the live project set. Tests can be
added when the broadcast pattern proves out across multiple use cases.

1 files changed, 19 insertions, 15 deletions

diff --git a/Makefile b/Makefile
index abf28c1..01bd1ee 100644
--- a/Makefile
+++ b/Makefile
@@ -220,24 +220,28 @@ install: ## Symlink skills and rules into ~/.claude/
 		fi \
 	fi
 	@echo ""
-	@echo "ai launcher:"
+	@echo "bin scripts:"
 	@mkdir -p "$(LOCAL_BIN)"
-	@chmod +x "$(AI_LAUNCHER)"
-	@if [ -L "$(LOCAL_BIN)/ai" ]; then \
-		target=$$(readlink "$(LOCAL_BIN)/ai"); \
-		if [ "$$target" = "$(AI_LAUNCHER)" ]; then \
-			echo "  skip  ai (already linked)"; \
+	@for src in $(CURDIR)/claude-templates/bin/*; do \
+		[ -f "$$src" ] || continue; \
+		name=$$(basename "$$src"); \
+		chmod +x "$$src"; \
+		if [ -L "$(LOCAL_BIN)/$$name" ]; then \
+			target=$$(readlink "$(LOCAL_BIN)/$$name"); \
+			if [ "$$target" = "$$src" ]; then \
+				echo "  skip  $$name (already linked)"; \
+			else \
+				rm "$(LOCAL_BIN)/$$name"; \
+				ln -s "$$src" "$(LOCAL_BIN)/$$name"; \
+				echo "  relink $$name → $$src (was: $$target)"; \
+			fi \
+		elif [ -e "$(LOCAL_BIN)/$$name" ]; then \
+			echo "  WARN  $$name exists and is not a symlink — skipping"; \
 		else \
-			rm "$(LOCAL_BIN)/ai"; \
-			ln -s "$(AI_LAUNCHER)" "$(LOCAL_BIN)/ai"; \
-			echo "  relink ai → $(AI_LAUNCHER) (was: $$target)"; \
+			ln -s "$$src" "$(LOCAL_BIN)/$$name"; \
+			echo "  link  $$name → $(LOCAL_BIN)/$$name"; \
 		fi \
-	elif [ -e "$(LOCAL_BIN)/ai" ]; then \
-		echo "  WARN  ai exists and is not a symlink — skipping"; \
-	else \
-		ln -s "$(AI_LAUNCHER)" "$(LOCAL_BIN)/ai"; \
-		echo "  link  ai → $(LOCAL_BIN)/ai"; \
-	fi
+	done
 	@echo ""
 	@echo "done"