feat(daemon): Tier B IPC client — live familiar status

[BunsDev]

Summary

Implements PR5: Tier B daemon socket client for coven-code.

What's new

src-rust/crates/core/src/coven_daemon.rs — new module:

• DaemonClient — blocking HTTP-over-Unix-socket client targeting ~/.coven/coven.sock
• DaemonClient::new() — returns None when socket is absent; never panics
• DaemonClient::is_online() — quick liveness check
• DaemonClient::familiar_statuses() — calls GET /api/v1/familiars, returns Vec<FamiliarStatus>
• DaemonClient::active_sessions() — calls GET /api/v1/sessions, filters archived, returns Vec<DaemonSession>
• Uses raw UnixStream + hand-written HTTP/1.0 (no new async/tokio deps)

coven_shared.rs — re-exports DaemonClient, FamiliarStatus, DaemonSession

agents_view.rs — load_agent_definitions() now optionally fetches live familiar statuses from the daemon and appends a badge to each familiar's description (e.g. · active (2 sessions), · online, · offline)

Graceful degradation

• No daemon → works exactly as before
• Daemon unreachable → empty vecs, no badge appended
• Partial data → safe defaults for all fields

Tests

4 new tests in coven_daemon: new_returns_none_when_sock_absent, new_returns_some_when_sock_present, familiar_status_deserializes_from_json, familiar_statuses_returns_empty_on_bad_json

Verification

• cargo check -p claurst-tui ✅
• cargo test -p claurst-core coven_daemon — 4/4 passed ✅
• cargo test -p claurst-core — 430 passed, 2 pre-existing keybindings failures unrelated to this PR

[Copilot]

Pull request overview

Adds Tier B Coven daemon IPC support so familiar entries can be annotated with live daemon status while preserving graceful fallback when the daemon is unavailable.

Changes:

• Introduces a blocking HTTP-over-Unix-socket DaemonClient with familiar/session status models.
• Re-exports daemon IPC types through coven_shared.
• Updates agent loading to append live familiar status badges when daemon data is available.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 5 comments.

File	Description
src-rust/crates/core/src/coven_daemon.rs	Adds the Unix-socket daemon client, response models, parsing logic, and tests.
src-rust/crates/core/src/lib.rs	Wires the new daemon module into the core crate.
src-rust/crates/core/src/coven_shared.rs	Updates Tier B documentation and re-exports daemon IPC types.
src-rust/crates/tui/src/agents_view.rs	Fetches daemon familiar statuses and appends live badges to familiar descriptions.

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