Make G006 task policy state machine executable

Typed task packets, policy decisions, lane board status, and session liveness now have concrete runtime contracts and focused regressions for Stream 4.

Constraint: G006 requires task/lane operation without pane scraping while preserving legacy task packet callers.
Rejected: waiting on stale worker worktrees | all G006 worker worktrees remained at main with no commits, so leader integrated the verified slice directly.
Confidence: high
Scope-risk: moderate
Directive: Keep task packet serde defaults when adding fields so older packets continue to deserialize.
Tested: git diff --check; cargo fmt --manifest-path rust/Cargo.toml --all -- --check; cargo check --manifest-path rust/Cargo.toml -p runtime -p tools -p rusty-claude-cli; cargo test --manifest-path rust/Cargo.toml -p runtime task_packet -- --nocapture; cargo test --manifest-path rust/Cargo.toml -p runtime policy_engine -- --nocapture; cargo test --manifest-path rust/Cargo.toml -p runtime task_registry -- --nocapture; cargo test --manifest-path rust/Cargo.toml -p runtime session_heartbeat -- --nocapture; cargo test --manifest-path rust/Cargo.toml -p tools run_task_packet_creates_packet_backed_task -- --nocapture; cargo test --manifest-path rust/Cargo.toml -p tools lane_completion -- --nocapture; cargo test --manifest-path rust/Cargo.toml -p rusty-claude-cli status_json_surfaces -- --nocapture
Not-tested: full workspace test suite; PR/issue reconciliation deferred to G011/G012

Co-authored-by: OmX <omx@oh-my-codex.dev>

Author: 2 people

docs/g006-task-policy-board-verification-map.md

@@ -0,0 +1,34 @@
+# G006 Task Policy Board Verification Map
+
+Goal: `G006-task-policy-board` — Stream 4 task packets, executable policy engine, lane board/status JSON, and running-state liveness heartbeat.
+
+## Prompt-to-artifact checklist
+
+| Requirement | Artifact/evidence |
+| --- | --- |
+| Typed task packet schema with objective, scope, files/resources, acceptance criteria, model/provider, permission profile, recovery policy, verification plan, reporting targets | `rust/crates/runtime/src/task_packet.rs` extends `TaskPacket` with `acceptance_criteria`, `resources`, `model`, `provider`, `permission_profile`, `recovery_policy`, `verification_plan`, and `reporting_targets`; tests cover legacy defaulted JSON and rich CC2 roundtrip. |
+| Backwards compatibility for existing task packets and tool callers | `serde(default)`/optional fields in `task_packet.rs`; `rust/crates/tools/src/lib.rs` `run_task_packet_creates_packet_backed_task` updated for rich schema; legacy packet test keeps old JSON accepted. |
+| Executable policy decisions for retry/rebase/merge/escalate/stale cleanup/approval token | `rust/crates/runtime/src/policy_engine.rs` adds `RetryAvailable`, `RebaseRequired`, `StaleCleanupRequired`, approval-token conditions/actions, `PolicyEvaluation`, `PolicyDecisionEvent`, and decision-table tests. |
+| Policy decisions explainable and typed-event logged/emittable | `PolicyDecisionEvent` serializable typed event with `rule_name`, `priority`, `kind`, `explanation`, `approval_token_id`; `evaluate_with_events` emits event per flattened action. |
+| Active lane board/dashboard/status JSON over canonical state | `rust/crates/runtime/src/task_registry.rs` adds `LaneBoard`, `LaneBoardEntry`, `LaneFreshness`, `lane_board_at`, and `lane_status_json_at`; CLI status JSON advertises lane board contract in `rust/crates/rusty-claude-cli/src/main.rs`. |
+| Heartbeats independent of terminal rendering with healthy/stalled/transport-dead cases | `rust/crates/runtime/src/session.rs` adds `SessionHeartbeat`/`SessionLiveness` from persisted session health state; `task_registry.rs` heartbeat freshness is computed from canonical heartbeat timestamps and transport state. |
+| Task/lane status JSON shows active/blocked/finished lanes with heartbeat freshness | `task_registry::tests::lane_board_groups_active_blocked_finished_and_reports_freshness`; `status_json_surfaces_session_lifecycle_for_clawhip`/status JSON surfaces lane board metadata. |
+| Leader-owned ultragoal audit remains separate from workers | No worker changed `.omx/ultragoal`; leader will checkpoint with fresh `get_goal` only after terminal verification. |
+
+## Verification run
+
+- `git diff --check` — PASS
+- `cargo fmt --manifest-path rust/Cargo.toml --all -- --check` — PASS
+- `cargo check --manifest-path rust/Cargo.toml -p runtime -p tools -p rusty-claude-cli` — PASS
+- `cargo test --manifest-path rust/Cargo.toml -p runtime task_packet -- --nocapture` — PASS (5 task packet tests)
+- `cargo test --manifest-path rust/Cargo.toml -p runtime policy_engine -- --nocapture` — PASS (12 unit + 1 integration match)
+- `cargo test --manifest-path rust/Cargo.toml -p runtime task_registry -- --nocapture` — PASS (17 task registry tests)
+- `cargo test --manifest-path rust/Cargo.toml -p runtime session_heartbeat -- --nocapture` — PASS (1 heartbeat test)
+- `cargo test --manifest-path rust/Cargo.toml -p tools run_task_packet_creates_packet_backed_task -- --nocapture` — PASS
+- `cargo test --manifest-path rust/Cargo.toml -p tools lane_completion -- --nocapture` — PASS (6 tests)
+- `cargo test --manifest-path rust/Cargo.toml -p rusty-claude-cli status_json_surfaces -- --nocapture` — PASS
+
+## Remaining gates
+
+- G006 can be checkpointed after team lifecycle is reconciled terminal and this commit is pushed.
+- Open PR/issue reconciliation remains explicitly deferred to G011/G012 via `docs/pr-issue-resolution-gate.md`.

rust/crates/runtime/src/lib.rs

@@ -135,8 +135,9 @@ pub use plugin_lifecycle::{
     PluginState, ResourceInfo, ServerHealth, ServerStatus, ToolInfo,
 };
 pub use policy_engine::{
-    evaluate, DiffScope, GreenLevel, LaneBlocker, LaneContext, PolicyAction, PolicyCondition,
-    PolicyEngine, PolicyRule, ReconcileReason, ReviewStatus,
+    evaluate, evaluate_with_events, ApprovalToken, DiffScope, GreenLevel, LaneBlocker, LaneContext,
+    PolicyAction, PolicyCondition, PolicyDecisionEvent, PolicyDecisionKind, PolicyEngine,
+    PolicyEvaluation, PolicyRule, ReconcileReason, ReviewStatus,
 };
 pub use prompt::{
     load_system_prompt, prepend_bullets, ContextFile, ModelFamilyIdentity, ProjectContext,
@@ -167,7 +168,7 @@ pub use sandbox::{
 };
 pub use session::{
     ContentBlock, ConversationMessage, MessageRole, Session, SessionCompaction, SessionError,
-    SessionFork, SessionPromptEntry,
+    SessionFork, SessionHeartbeat, SessionLiveness, SessionPromptEntry,
 };
 pub use sse::{IncrementalSseParser, SseEvent};
 pub use stale_base::{
@@ -178,7 +179,10 @@ pub use stale_branch::{
     apply_policy, check_freshness, BranchFreshness, StaleBranchAction, StaleBranchEvent,
     StaleBranchPolicy,
 };
-pub use task_packet::{validate_packet, TaskPacket, TaskPacketValidationError, ValidatedPacket};
+pub use task_packet::{
+    validate_packet, TaskPacket, TaskPacketValidationError, TaskResource, ValidatedPacket,
+};
+pub use task_registry::{LaneBoard, LaneBoardEntry, LaneFreshness, LaneHeartbeat};
 #[cfg(test)]
 pub use trust_resolver::{TrustConfig, TrustDecision, TrustEvent, TrustPolicy, TrustResolver};
 pub use usage::{