diff --git a/.gitignore b/.gitignore
index 3ff059cfdda..28e3868ff1c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -66,7 +66,6 @@ tmp/
design-docs/
.context/
.atl/
-/agent-hooks/
# Local-only design/planning docs (not checked in)
docs/*.md
diff --git a/00-design-review-context.md b/00-design-review-context.md
deleted file mode 100644
index 82c442b04e9..00000000000
--- a/00-design-review-context.md
+++ /dev/null
@@ -1,73 +0,0 @@
-# Design Review Context
-
-## Document Info
-- Path: docs/orchestration-workspace-lineage.md
-- Type: Technical Spec / Product Design
-- Review started: 2026-05-14 15:36:41 PDT
-
-## Design Direction
-- Direction confirmed: confirmed
-- Chosen approach: first-class persisted workspace lineage with runtime-validated capture source/confidence, followed by opt-in sidebar Parent grouping
-- Alternatives considered: session-scoped lineage only; orchestration-only lineage; storing parent fields directly on WorktreeMeta
-- Key UX decisions: Parent grouping remains opt-in; pinned workspaces keep precedence with parent badges; inferred relationships are visible in CLI output and JSON; hidden/missing parent states remain recoverable
-
-## Iteration State
-Current iteration: 3
-Last completed phase: Iteration 3 Verification
-Issues addressed this iteration: none; verification found no remaining P0/P1 findings
-
-## Addressed Issues (Do Not Re-report)
-
-
-
-Phase 0.5 | P1 | UX | Hidden confidence state for inferred parent | Added capture source/confidence to lineage and CLI output
-Phase 0.5 | P1 | Architecture | Runtime capture source of truth unclear | Added Capture Source of Truth section and runtime validation rules for caller context
-Phase 0.5 | P2 | UX | Parent grouping interactions under-specified | Added interaction state matrix for grouping, reveal, collapse, and repair flows
-Phase 0.5 | P2 | Architecture | Row model/reveal risk under-specified | Added flat row model contract and sidebar grouping test requirements
-Phase 0.5 | P2 | Architecture | Orchestration enrichment bridge incomplete | Added narrow runtime orchestration bridge and centralized validation guidance
-Iteration 1 | P1 | CLI | CLI JSON shape/stdout contract ambiguity | Specified existing RPC envelope, single JSON stdout object, and stderr-only human diagnostics
-Iteration 1 | P1 | CLI | Missing JSON warning/error contracts | Added `result.warnings[]`, stable lineage warning codes, and structured `ok: false` error example with `nextSteps`
-Iteration 1 | P2 | Data integrity | Path-derived worktree ID reuse can stale-attach lineage | Added immutable workspace instance IDs and stale-instance handling
-Iteration 1 | P2 | UX | Hidden-parent rendering was ambiguous | Made Parent grouping use `Hidden parent` deterministically and non-Parent modes use badges
-Iteration 1 | P2 | Operational | Lineage failure observability under-specified | Added structured diagnostics with reason code, request ID, runtime ID, and candidate source types
-Iteration 1 | P2 | UX | Repair action semantics under-specified | Renamed action to `Group under active workspace` and defined selection, disabled, multi-select, and SSH validation behavior
-Iteration 2 | P1 | UX | Hidden parent behavior conflicted with filter contract | Made Parent grouping always render the real parent group when the parent exists and any child matches filters
-Iteration 2 | P2 | API contract | Stale-instance warning placement under-specified | Clarified `LINEAGE_PARENT_INSTANCE_STALE` is a hydration/read-path diagnostic, not a create warning
-
-## Skipped Issues (Accepted Risks)
-
-
-
-
-Phase 0.5 | P3 | UX | Below fix threshold after adding CLI/JSON confidence signals | Cognitive load from four grouping modes plus pinning exception
-
-## Invalidated Findings (Do Not Re-report)
-
-
-
-
-[Initially empty - populated after each validation phase]
-
-## Findings History
-
-
-### Phase 0.5
-- Direction challenge confirmed the proposed direction with refinement.
-- P0: 0 | P1: 2 | P2: 3 | P3: 1
-- Addressed: 5 | Skipped: 1
-- Key changes: capture confidence/source, runtime validation source-of-truth, interaction states, row model contract, orchestration bridge, capture-quality rollout gate
-
-### Iteration 1
-- P0: 0 | P1: 2 | P2: 4 | P3: 0
-- Addressed: 6 | Skipped: 0
-- Key changes: JSON envelope compatibility, structured warning/error contracts, instance IDs for stale lineage protection, deterministic hidden-parent rendering, diagnostics, repair-action semantics
-
-### Iteration 2
-- P0: 0 | P1: 1 | P2: 1 | P3: 0
-- Addressed: 2 | Skipped: 0
-- Key changes: parent group/filter precedence clarified; stale-instance diagnostics scoped to hydration/read path
-
-### Iteration 3
-- P0: 0 | P1: 0 | P2: 0 | P3: 0
-- Addressed: 0 | Skipped: 0
-- Key changes: final verification only; primary and secondary reviewers both reported no P0/P1 findings
diff --git a/mockups/workspace-relationship-alternatives.html b/mockups/workspace-relationship-alternatives.html
deleted file mode 100644
index 3ca9c9fcbce..00000000000
--- a/mockups/workspace-relationship-alternatives.html
+++ /dev/null
@@ -1,531 +0,0 @@
-
-
-
-
-
- Workspace Relationship Alternatives
-
-
-
-
- Workspace Relationship Alternatives
-
- Throwaway HTML mocks for comparing parent/child workspace treatments against Orca's
- existing sidebar card language.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-