feat(goal): align goal status enum with task statuses

CHANGELOG.md

@@ -8,6 +8,10 @@ Please choose versions by [Semantic Versioning](http://semver.org/).
 * MINOR version when you add functionality in a backwards-compatible manner, and
 * PATCH version when you make backwards-compatible bug fixes.
 
+## Unreleased
+
+- feat(goal): align `AvailableGoalStatuses` with task statuses — `next, in_progress, backlog, hold, aborted` accepted alongside legacy `active, completed, on_hold` (kept as backward-compat aliases). `goal set status in_progress` etc. now succeed; existing vault files using either set continue to validate. Unblocks task-orchestrator drag-and-drop on the Goals view (bborbe/task-orchestrator#19).
+
 ## v0.89.0
 
 - feat(launch-goal): add new `/vault-cli:launch-goal` interview-driven goal framing command — discovery → fan-out exploration (5 parallel semantic searches + duplicate-check gate) → 3-lens framing (parallel subagents → top-3 candidates) → sharpen → draft-to-disk with `status: draft` + Obsidian link → parallel verify (Adversarial Laziness Test + outcome traceability + hedge-word grep) → audit fan-out (goal-auditor + graph-auditor + late dup-check) → status flip on PASS. Resolves the "create-goal jumps straight to writing" failure mode by forcing an outcome-sentence confirmation gate before file creation. Mirrors `/launch-agent` shape; positions as the rigorous front door beside `create-goal`'s template fast-path

pkg/domain/goal.go

@@ -36,18 +36,41 @@ func NewGoal(data map[string]any, meta FileMetadata, content Content) *Goal {
 }
 
 // GoalStatus represents the status of a goal.
+//
+// The enum is aligned with the task status taxonomy so a single mental model
+// and a single UI control set (e.g. task-orchestrator's Kanban columns) can
+// act on both tasks and goals. The original 3 values (active, completed,
+// on_hold) are retained as accepted aliases for backward compatibility with
+// existing goal files: active ↔ in_progress semantically, on_hold ↔ hold
+// semantically. New writes from agents are expected to use the new canonical
+// values; reads tolerate both.
 type GoalStatus string
 
 const (
-	GoalStatusActive    GoalStatus = "active"
-	GoalStatusCompleted GoalStatus = "completed"
-	GoalStatusOnHold    GoalStatus = "on_hold"
+	GoalStatusNext       GoalStatus = "next"
+	GoalStatusInProgress GoalStatus = "in_progress"
+	GoalStatusBacklog    GoalStatus = "backlog"
+	GoalStatusCompleted  GoalStatus = "completed"
+	GoalStatusHold       GoalStatus = "hold"
+	GoalStatusAborted    GoalStatus = "aborted"
+
+	// Legacy values — accepted on read + write for backward compatibility.
+	// New code should prefer GoalStatusInProgress / GoalStatusHold.
+	GoalStatusActive GoalStatus = "active"
+	GoalStatusOnHold GoalStatus = "on_hold"
 )
 
 // AvailableGoalStatuses lists all valid canonical goal status values.
+// Includes both the new task-aligned set and the legacy 3-value set so
+// existing vault files (which may use either) continue to validate.
 var AvailableGoalStatuses = GoalStatuses{
-	GoalStatusActive,
+	GoalStatusNext,
+	GoalStatusInProgress,
+	GoalStatusBacklog,
 	GoalStatusCompleted,
+	GoalStatusHold,
+	GoalStatusAborted,
+	GoalStatusActive,
 	GoalStatusOnHold,
 }