Codex/selection pool conflict

.changeset/fix-pool-lane-membership.md

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+---
+'@logicflow/extension': patch
+---
+
+fix: keep pool lane membership consistent after render and rejected lane drops

.changeset/fix-selection-pool-conflict.md

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+---
+'@logicflow/extension': patch
+---
+
+fix: avoid SelectionSelect errors when used with PoolElements

.changeset/pool-lane-behavior-upgrade.md

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+---
+'@logicflow/extension': minor
+---
+
+feat: upgrade PoolElements lane interactions with configurable deletion, lane count limits, lane-driven resize, pool/lane collapse, configurable title positions, collapsed lane spacing, automatic empty pool cleanup, and safer lane copy-paste behavior.

.gitignore

@@ -30,3 +30,5 @@ logic-flow-docs.tar.gz
 tmp
 tmp-production
 package-lock.json
+
+.superpowers

docs/superpowers/plans/2026-07-29-selection-pool-conflict.md

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+# Selection Pool Conflict Implementation Plan
+
+> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking.
+
+**Goal:** Fix #2418 so `SelectionSelect` works with `PoolElements` and preserves parent-container selection deduplication.
+
+**Architecture:** Keep the fix local to `SelectionSelect`. Add an internal parent-container helper that supports legacy `Group`, `DynamicGroup`, and `PoolElements` without changing public plugin APIs.
+
+**Tech Stack:** TypeScript, Jest jsdom, `@logicflow/core`, `@logicflow/extension`.
+
+## Global Constraints
+
+- Use `pnpm` only.
+- Write the failing test before implementation.
+- Preserve public API compatibility.
+- Do not refactor `graphModel.dynamicGroup` mounting.
+- Do not modify Pool/Lane membership semantics.
+
+---
+
+### Task 1: Add Regression Test
+
+**Files:**
+- Create: `packages/extension/__test__/selection-select/pool-conflict.test.ts`
+
+**Interfaces:**
+- Consumes: `PoolElements`, `SelectionSelect`, `LogicFlow`.
+- Produces: failing coverage for `SelectionSelect + PoolElements`.
+
+- [ ] **Step 1: Write the failing test**
+
+Create a jsdom test that renders `pool -> lane -> node`, drives the selection plugin's end-of-drag logic, and asserts `pool` is selected while `lane` and `node` are not.
+
+- [ ] **Step 2: Run RED**
+
+Run: `pnpm test -- packages/extension/__test__/selection-select/pool-conflict.test.ts --runInBand`
+
+Expected: FAIL with `getGroupByNodeId is not a function`.
+
+### Task 2: Implement SelectionSelect Parent Container Lookup
+
+**Files:**
+- Modify: `packages/extension/src/components/selection-select/index.ts`
+
+**Interfaces:**
+- Consumes: `graphModel.group`, `graphModel.dynamicGroup`.
+- Produces: `getParentContainerByNodeId(nodeId: string)` private helper.
+
+- [ ] **Step 1: Add the private helper**
+
+Use optional function checks for `getNodeGroup`, `getGroupByNodeId`, and `getLaneByNodeId`.
+
+- [ ] **Step 2: Replace duplicated inline checks**
+
+Use the helper inside the `elements.forEach` selection filtering branch.
+
+- [ ] **Step 3: Run GREEN**
+
+Run: `pnpm test -- packages/extension/__test__/selection-select/pool-conflict.test.ts --runInBand`
+
+Expected: PASS.
+
+### Task 3: Verify Nearby Regression Coverage
+
+**Files:**
+- Existing extension tests.
+
+- [ ] **Step 1: Run pool tests**
+
+Run: `pnpm test -- packages/extension/__test__/pool --runInBand`
+
+Expected: PASS.
+
+- [ ] **Step 2: Run targeted extension build if needed**
+
+Run: `pnpm --filter @logicflow/extension build:esm`
+
+Expected: PASS.