Clean contract lifecycle: Add supervisor complete command (#13)

* feat: Add contract lifecycle management commands (complete and resume-contract)

Add supervisor commands for properly managing contract lifecycle:
- `makima supervisor complete` - Mark a contract as complete and stop the supervisor
- `makima supervisor resume-contract` - Resume a completed contract (reactivate it)

Also adds `api_key` field to TaskConfig for authenticated API calls.

This consolidates the lifecycle management features from the contract-lifecycle-cleanup branch.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* Fix: prevent supervisor auto-start for completed contracts

When viewing a completed contract, the supervisor was auto-starting
on component mount. This would resurrect completed contracts and
cause them to continue running.

Changes:
- Add contract.status !== 'completed' check to the auto-start condition
- Add contract.status to the useEffect dependency array

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* Task completion checkpoint

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/makima/src/daemon/task/manager.rs b/makima/src/daemon/task/manager.rs
index 80b7039..555cd2a 100644
--- a/makima/src/daemon/task/manager.rs
+++ b/makima/src/daemon/task/manager.rs
@@ -980,6 +980,8 @@ pub struct TaskConfig {
     pub bubblewrap: Option<crate::daemon::config::BubblewrapConfig>,
     /// API URL for spawned tasks (HTTP endpoint for makima CLI).
     pub api_url: String,
+    /// API key for making authenticated API calls.
+    pub api_key: String,
     /// Interval in seconds between heartbeat commits (WIP checkpoints).
     /// Set to 0 to disable. Default: 300 (5 minutes).
     pub heartbeat_commit_interval_secs: u64,
@@ -998,6 +1000,7 @@ impl Default for TaskConfig {
             disable_verbose: false,
             bubblewrap: None,
             api_url: "https://api.makima.jp".to_string(),
+            api_key: String::new(),
             heartbeat_commit_interval_secs: 300, // 5 minutes
         }
     }