Add patch checkpointing

1 files changed, 44 insertions, 0 deletions

diff --git a/makima/src/daemon/config.rs b/makima/src/daemon/config.rs
index 9a00166..b7cb1e8 100644
--- a/makima/src/daemon/config.rs
+++ b/makima/src/daemon/config.rs
@@ -223,6 +223,48 @@ pub struct ProcessConfig {
     /// Set to 0 to disable. Default: 300 (5 minutes).
     #[serde(default = "default_heartbeat_commit_interval", alias = "heartbeatcommitintervalsecs")]
     pub heartbeat_commit_interval_secs: u64,
+
+    /// Checkpoint patch storage configuration for task recovery.
+    #[serde(default)]
+    pub checkpoint_patches: CheckpointPatchConfig,
+}
+
+/// Configuration for checkpoint patch storage in PostgreSQL.
+/// Patches are stored to enable task recovery when local worktrees are lost.
+#[derive(Debug, Clone, Deserialize)]
+#[serde(default)]
+pub struct CheckpointPatchConfig {
+    /// Enable patch storage in PostgreSQL (default: true).
+    #[serde(default = "default_true")]
+    pub enabled: bool,
+
+    /// Maximum patch size in bytes (default: 10MB).
+    /// Patches larger than this will not be stored.
+    #[serde(default = "default_max_patch_size", alias = "maxpatchsizebytes")]
+    pub max_patch_size_bytes: usize,
+
+    /// TTL for patches in hours (default: 168 = 7 days).
+    /// Patches older than this will be automatically cleaned up.
+    #[serde(default = "default_patch_ttl_hours", alias = "ttlhours")]
+    pub ttl_hours: u64,
+}
+
+fn default_max_patch_size() -> usize {
+    10 * 1024 * 1024 // 10MB
+}
+
+fn default_patch_ttl_hours() -> u64 {
+    168 // 7 days
+}
+
+impl Default for CheckpointPatchConfig {
+    fn default() -> Self {
+        Self {
+            enabled: true,
+            max_patch_size_bytes: default_max_patch_size(),
+            ttl_hours: default_patch_ttl_hours(),
+        }
+    }
 }
 
 fn default_claude_command() -> String {
@@ -255,6 +297,7 @@ impl Default for ProcessConfig {
             env_vars: HashMap::new(),
             bubblewrap: BubblewrapConfig::default(),
             heartbeat_commit_interval_secs: default_heartbeat_commit_interval(),
+            checkpoint_patches: CheckpointPatchConfig::default(),
         }
     }
 }
@@ -576,6 +619,7 @@ impl DaemonConfig {
                 env_vars: HashMap::new(),
                 bubblewrap: BubblewrapConfig::default(),
                 heartbeat_commit_interval_secs: 300,
+                checkpoint_patches: CheckpointPatchConfig::default(),
             },
             local_db: LocalDbConfig {
                 path: PathBuf::from("/tmp/makima-daemon-test/state.db"),