feat(ui): add maintenance page for task management

* Implement maintenance page with task and log display
* Add backfill and metadata retry functionality
* Integrate grid component for project display in thoughts page
* Update types for maintenance tasks and logs
* Enhance sidebar and shell for new maintenance navigation

Makefile

@@ -20,10 +20,26 @@ LDFLAGS := -s -w \
 	-X $(BUILDINFO_PKG).Commit=$(COMMIT_SHA) \
 	-X $(BUILDINFO_PKG).BuildDate=$(BUILD_DATE)
 
-.PHONY: all build clean migrate release-version test generate-migrations generate-models check-schema-drift build-cli ui-install ui-build ui-dev ui-check
+.PHONY: all build clean migrate release-version test generate-migrations generate-models check-schema-drift build-cli ui-install ui-build ui-dev ui-check help
 
 all: build
 
+help:
+	@echo "Available targets:"
+	@echo "  build                Build server binary (includes UI build)"
+	@echo "  build-cli            Build CLI binary"
+	@echo "  test                 Run all tests (includes UI check)"
+	@echo "  clean                Remove build artifacts"
+	@echo "  migrate              Run database migrations"
+	@echo "  release-version      Tag and push a new patch release (PATCH_INCREMENT=N)"
+	@echo "  generate-migrations  Generate SQL migration from DBML schema files"
+	@echo "  generate-models      Generate Go models from DBML schema"
+	@echo "  check-schema-drift   Verify generated migration matches current schema"
+	@echo "  ui-install           Install UI dependencies"
+	@echo "  ui-build             Build UI assets"
+	@echo "  ui-dev               Start UI dev server"
+	@echo "  ui-check             Run UI type checks"
+
 build: ui-build
 	@mkdir -p $(BIN_DIR)
 	go build -ldflags "$(LDFLAGS)" -o $(SERVER_BIN) $(CMD_SERVER)