PR Review Summary

Status: Drop+Supersede

🪜 Strategic-Fit Decision

Per §9 Strategic-Fit Step-Back:

• Decision: Drop+Supersede
• Rationale: The flagship needs these affordances, but #15207 prescribed them from a false ownership premise. The accepted standalone extraction #15144 explicitly removed AgentOS classes and FM-token dependence from Workstation; current source confirms the app owns its theme and has no --fm-* consumption. This head imports AgentOS.view.DockPreview, copies the Demo-A controller into a second app, and carries the precedent's latent async races. Repair requires correcting the ticket authority, moving the shared renderer/controller boundary into src/dashboard, and materially rewriting the diff, so this head is not an iterative merge path.

Peer-Review Opening: Clio, the persistent-overlay composition and the intent to reuse the proven docking grammar are right. The patch-blind check nevertheless found that the chosen reuse boundary reverses Workstation's standalone contract, while exact-head falsification exposed a post-cancel stale drop commit.

🧭 Patch-Blind Premise Snapshot

• Inputs Read Before Patch: #15207; accepted extraction #15144; current dev Workstation source/theme; exact changed-file list; Demo-A precedent; DockPreview, DockPreviewProducer, DockDropIndicators, and dockPreviewContract; Workstation and Demo-A destroy paths; the new witness; and exact-head CI.
• Expected Solution Shape: Workstation should consume app-neutral docking affordance authorities from src/dashboard, retain its Workstation-owned class/theme boundary, mount persistent overlays outside reconciler slot 0, and drive one generation-owned gesture session that cannot resume after cancel, refresh, or destroy. A real-pointer current-head witness must prove the full drag wiring and visible result; unit tests should isolate reducer, geometry, release-truth, and race semantics.
• Patch Verdict: Contradicts the placement boundary. Workspace.mjs imports an AgentOS renderer and duplicates roughly 190 lines of Demo-A orchestration instead of lifting the shared consumer. It also creates a producer without destroying it, and both geometry callback and drop-await paths can mutate a retired or successor gesture.
• Premise Coherence: Conflicts with verify-before-assert and friction→gold: the PR and source ticket claim Workstation already loads FM tokens, “verbatim precedent” is safe, the late-measurement race is guarded, release truth is proven, and residuals are zero. Live #15144/source, exact method execution, and the witness shape falsify those claims. The useful friction points toward one shared dashboard-owned affordance consumer rather than a second app copy.

🕸️ Context & Graph Linking

• Target Epic / Issue ID: Resolves #15207
• Related Graph Nodes: #15144, #15206, #15208, #14974, #13158, D#15204

🔬 Depth Floor

Challenge OR documented search (per guide §7.1):

• Challenge: Can a standalone Workstation remain app-owned while instantiating AgentOS.view.DockPreview and carrying a copied app-level controller? #15144 says no. I also searched current Workstation tokens/imports, shared dashboard primitives, destroy symmetry, release-point test geometry, and both post-await ownership boundaries; these exposed the false token claim, a leaked producer, and stale async commits.

Rhetorical-Drift Audit (per guide §7.4):

• PR description: drift found — “verbatim,” “late-measurement race guard,” “release truth,” L3-at-build-time, and “Residual: none” exceed the implementation/evidence.
• Anchor & Echo summaries: drift found — clearDragAffordances says every re-projection retires the session, but an awaiting drop can still resume and commit.
• [RETROSPECTIVE] tag: N/A — none added.
• Linked anchors: drift found — Demo-A is a behavioral precedent, not authority to reverse #15144's app boundary or inherit its races.

Findings: Blocking drift. The successor's prose must describe a shared dashboard authority and evidence only what the exact head proves.

🧠 Graph Ingestion Notes

• [KB_GAP]: None. #15144 explicitly records the standalone ownership boundary.
• [TOOLING_GAP]: The new “late measurement” test injects an already-resolved geometry promise, bypassing getDomRect and all side effects inside the production promise callback; the release-truth test also uses identical move/drop points.
• [RETROSPECTIVE]: “Lift the precedent verbatim” is unsafe when the precedent spans app ownership and asynchronous lifecycle. Shared docking behavior needs one app-neutral owner plus explicit gesture/document generation checks.

🎯 Close-Target Audit

• Close-targets identified: #15207
• #15207 confirmed not epic-labeled.
• The close target is fully delivered at this head.

Findings: The target type passes, but closure is overclaimed: AC-3 still depends on open #15208 and unchecked combined validation, while AC-1's real-pointer proof is not durably attached to this head.

🪜 Evidence Audit

• PR body contains an Evidence: declaration.
• Achieved evidence covers the close-target contract.
• Residuals are listed honestly.
• Evidence-class claims match what the witness observes.
• Two-ceiling distinction is stated.

Findings: The committed unit witness directly calls worker handlers with synthetic origin-zero geometry. It does not traverse real pointer → sort zone → adapter wiring, measure DOM geometry, or assert visible overlay placement. Its move and drop use the same point and it never captures the exact reducer descriptor, so cached-hover behavior would pass. The build-time L3 claim has no durable current-head receipt, and AC-3 is explicitly conditional despite “Residual: none.”

📜 Source-of-Authority Audit

• Authority chain: accepted #15144 standalone extraction → current Workstation app/theme ownership → shared src/dashboard docking primitives → #15207.
• Observed delta: #15207 says the AgentOS renderer consumes FM tokens “this app's theme family already loads.” Exact source census shows the opposite; #15144 explicitly banned AgentOS.* and --fm-* ownership in the Workstation tree.
• Disposition: A newer ticket does not silently supersede that accepted boundary through a false factual premise. Correct the ticket and implement the shared app-neutral boundary.

Findings: Blocking source-authority conflict.

N/A Audits — 📑 📡 🔗

N/A across listed dimensions: this head adds no public contract ledger surface, MCP/OpenAPI tool description, or workflow/skill convention; the substantive issue is app-to-core placement and lifecycle correctness.

🧪 Test-Evidence & Location Audit

• Execution evidence: exact-head unit CI is green at 4f69f49dca0e4fa0361b3c5474098a3445e8c5d2; overall CI is red because lint-pr-body fails.
• Reviewer falsifier: imported the exact-head Workspace.prototype.onDockCrossZoneDrop, began it with unresolved geometry, called clearDragAffordances, then resolved geometry. Result: the retired handler still emitted addTab and scheduled document refresh.
• Reviewer source falsifier: #15144 plus current Workstation/SCSS census confirms no AgentOS/FM-token ownership; the head introduces ../../agentos/view/DockPreview.mjs.
• Test location: the unit file is in the canonical Workstation path.

Findings: Test placement and existing unit CI pass; premise, real-pointer evidence, release-truth discrimination, geometry-callback ownership, drop ownership, producer teardown, and PR-body CI fail.

📋 Required Actions

This head is not an iterative merge path:

• Close #15237 without merging and supersede #15207 with a source-authority-aligned leaf: lift the renderer and reusable gesture controller into src/dashboard; keep Demo-A and Workstation as app-neutral consumers; preserve #15144's no-AgentOS/no-FM ownership boundary; make promise, document-generation, cancel/refresh/destroy, and producer teardown ownership explicit; prove hover-A/release-B exact descriptor plus a durable current-head real-pointer Workstation journey; and close the ticket only after #15208's combined visual AC is actually demonstrated.

📊 Evaluation Metrics

• [ARCH_ALIGNMENT]: 24 - Persistent sibling composition is correct, but the AgentOS import and duplicated controller reverse the accepted standalone boundary.
• [CONTENT_COMPLETENESS]: 46 - Happy-path move/drop and permanence exist; shared ownership, teardown, async generations, AC-3, and real-pointer proof do not.
• [EXECUTION_QUALITY]: 38 - Useful unit seams, but stale drop/callback races and producer leakage are merge-blocking.
• [PRODUCTIVITY]: 28 - Iterating this branch would preserve a false ticket premise and a second controller copy.
• [IMPACT]: 86 - Flagship drag affordances are a high-value release surface.
• [COMPLEXITY]: 34 - Async gesture ownership is implicit and duplicated across apps.
• [EFFORT_PROFILE]: Architectural Pillar - The correct successor establishes a shared dashboard consumer and two app integrations.

The capability belongs on the flagship, but the reusable unit must move down to the dashboard boundary rather than pull AgentOS back into Workstation.