refactor(cli): unify daemon lifecycle management

.gitignore

@@ -23,6 +23,7 @@ target/
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
 .worktrees
+.scratch/
 .claude/settings.local.json
 
 # Go binaries

AGENTS.md

@@ -13,7 +13,7 @@ Local-first note management CLI with cloud sync via PowerSync and Supabase.
 
 Rust workspace with 4 crates:
 
-- **flicknote-cli** — CLI package (`flicknote`, `flicknote-sync`): thin CLI/MCP clients and daemon entrypoint; data commands never open SQLite or Postgres
+- **flicknote-cli** — unified `flicknote` executable: thin CLI/MCP clients and foreground daemon entrypoint; data commands never open SQLite or Postgres
 - **flicknote-core** — Shared library (db, config, schema, types, session, services, DTOs, errors)
 - **flicknote-auth** — Supabase GoTrue authentication (OTP + OAuth2/PKCE)
 - **flicknote-sync** — Daemon application host, typed RPC boundary, backend ownership, and PowerSync ↔ Supabase sync

Cargo.toml

@@ -31,6 +31,8 @@ futures-lite = "2"
 anyhow = "1"
 toml = "0.8"
 dirs = "6"
+service-manager = "0.11"
+fs4 = "1.1"
 
 [workspace.lints.rust]
 unsafe_code = "warn"