Receipt type: Timestamped sequencing snapshot Source control-plane doc: design_docs/graphshell_docs/implementation_strategy/PLANNING_REGISTER.md Purpose: Preserve the merge-conflict-aware lane sequencing decision so active planning sections can stay concise.

• Merge-churn hotspots: app.rs, render/mod.rs, workbench/gui integration files, and high-traffic planning docs.
• Operating rule source: CONTRIBUTING.md lane workflow (one active mergeable PR per lane for shared hotspots, stacked PRs for dependencies).
• Maintainer objective: minimize merge conflicts while preserving forward progress across p6, p7, p10, runtime, and quickwins lanes.

1. lane:p6 (pane/workbench architecture)

   • #76 Workbench pane architecture follow-up (tool-pane intents + legacy panel bridge)
   • #77 Tool-pane render/title/focus dispatch by ToolPaneState

2. lane:p7 (viewer/content/registry alignment)

   • #78 Split node-pane semantics from webview-runtime helpers
   • #68 P7.a node MIME/address fields + WAL intents
   • #69 P7.b MIME detection pipeline
   • #70 P7.c lifecycle integration for ViewerRegistry::select_for
   • #71 P7.d plaintext viewer baseline renderer + tests
   • #80 Fold subsystem capability/conformance declarations into descriptors
   • #82 RegistryRuntime integration (replace remaining legacy desktop dispatch)

3. Return to lane:p6 for graph multi-view stack

   • #63 P6.a state model + focused-view wiring
   • #64 P6.b graph-pane payload integration across open/split/focus paths
   • #65 P6.c render path accepts GraphViewId
   • #66 P6.d split graph view + per-pane lens selector UI
   • #67 P6.e Canonical/Divergent controls + commit stub

4. lane:p6 / storage overlap follow-up

   • #79 Workspace persistence schema alignment (pane-model tool/node semantics)

5. lane:p10 baseline completion

   • #74 Complete WebView a11y bridge graft
   • #75 Accessibility validation harness + manual checks
   • #73 Culling validation + benchmark instrumentation
   • close #10 after #73/#74/#75

6. lane:runtime (gui churn low)

   • #81 ControlPanel cleanup (globals + SignalBus reconciliation)

7. lane:quickwins (opportunistic)

   • #21 extract radial menu module
   • #22 extract command palette module
   • #27 semantic tab labels
   • #28 zoom-adaptive LOD thresholds

8. lane:roadmap (planning/adoption)

   • #11, #12, #13, #14, #18, #19

• lane:p6: #76 → #77
• lane:p7: #78 → #68 → #69 → #70
• lane:p10: #74
• lane:p7: #71 → #80 → #82
• lane:p6: #63 → #64 → #65 → #66 → #67
• lane:p6: #79
• lane:p10: #75 → #73 → close #10
• lane:runtime: #81

• One active mergeable PR per lane when touching hotspot files.
• Cross-lane sequencing avoids simultaneous changes to workbench/gui hotspots.
• PR stacks are merged bottom-up to reduce repeated rebases.

Update this receipt only when sequencing assumptions materially change (lane order, stack order, or hotspot constraints). Otherwise, update only the active control-plane section in the planning register.