feat(install): install the codebase-memory code graph with make install

The operator's three manual steps become part of the global install: install.sh runs yay -S --needed codebase-memory-mcp-bin when the binary is missing and yay exists, right before the existing auto_index switch; enable-plugins.js registers the DeusData/codebase-memory-mcp marketplace and enables codebase-memory@codebase-memory declaratively, the way it already handles caveman and ponytail, instead of claude plugin marketplace add and claude plugin install. kvb-agent-optimize now hands the operator make install instead of the single commands. test_dream checks the plugin and its marketplace.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/install.sh

@@ -64,6 +64,10 @@ if [[ "${TARGET}" == "${HOME}" ]]; then
 	else
 		warn "skills: no systemd user session; skipped the kvb-dream notification timer."
 	fi
+	if ! command -v codebase-memory-mcp &>/dev/null && command -v yay &>/dev/null; then
+		log "skills: installing the codebase-memory-mcp code graph"
+		yay -S --needed codebase-memory-mcp-bin
+	fi
 	if command -v codebase-memory-mcp &>/dev/null; then
 		log "skills: auto-indexing every repository a session opens into the code graph"
 		codebase-memory-mcp config set auto_index true