refactor: remove AI Lodash dependencies and simplify workspace code

[nperez0111]

Second PR in the stack: #3118 → this PR → core emoji data → React picker.

These changes were done by the e18e cli

Removes the direct Lodash equality and merge dependencies in the AI package. The request-composition change replaces document snapshots and tool definitions without recursive array merges. Includes targeted AI regression tests, the small source cleanups from #2903, and aligned Vitest workspace dependency metadata. Preserves the keyboard-shortcut fix already present on main.

Verified: core, React, and xl-ai builds; 12 targeted AI tests.

Original work: #2903.

Summary by CodeRabbit

• Bug Fixes
  • Preserved valid document positions at the start of a document when locating the nearest block.
  • Improved handling of AI message metadata and options: arrays are now replaced as a whole rather than merged item by item.
  • Added safeguards for cases where expected blocks or comments are missing, reducing the chance of unexpected failures.
• Improvements
  • Updated how AI tool schemas compare shared definitions, while continuing to flag conflicting definitions.

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📥 Commits

Reviewing files that changed from the base of the PR and between aa1933e and 341700e.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (35)

• packages/core/src/api/blockManipulation/commands/moveBlocks/moveBlocks.ts
• packages/core/src/api/blockManipulation/commands/updateBlock/updateBlock.test.ts
• packages/core/src/api/blockManipulation/tables/tables.test.ts
• packages/core/src/api/getBlockInfoFromPos.ts
• packages/core/src/api/getBlocksChangedByTransaction.ts
• packages/core/src/api/nodeConversions/nodeToBlock.ts
• packages/core/src/api/parsers/markdown/markdownToHtml.ts
• packages/core/src/blocks/ListItem/NumberedListItem/IndexingPlugin.ts
• packages/core/src/comments/threadstore/TipTapThreadStore.ts
• packages/core/src/editor/managers/BlockManager.ts
• packages/core/src/editor/managers/ExtensionManager/index.ts
• packages/core/src/editor/transformPasted.ts
• packages/core/src/extensions/SideMenu/SideMenu.ts
• packages/core/src/extensions/Versioning/Versioning.ts
• packages/core/src/extensions/tiptap-extensions/Link/helpers/autolink.ts
• packages/core/src/extensions/tiptap-extensions/Link/helpers/linkDetector.ts
• packages/core/src/extensions/tiptap-extensions/UniqueID/UniqueID.ts
• packages/core/src/util/string.ts
• packages/core/src/y/extensions/YCursorPlugin.ts
• packages/core/src/yjs/extensions/YCursorPlugin.ts
• packages/react/src/components/Comments/ThreadsSidebar.tsx
• packages/react/src/components/Versioning/CurrentSnapshot.tsx
• packages/react/src/hooks/useStore.ts
• packages/xl-ai-server/src/routes/mock.ts
• packages/xl-ai-server/src/routes/serverPersistence.ts
• packages/xl-ai/package.json
• packages/xl-ai/src/api/aiRequest/sendMessageWithAIRequest.test.ts
• packages/xl-ai/src/api/aiRequest/sendMessageWithAIRequest.ts
• packages/xl-ai/src/api/formats/base-tools/createAddBlocksTool.ts
• packages/xl-ai/src/components/FormattingToolbar/AIToolbarButton.tsx
• packages/xl-ai/src/prosemirror/changeset.ts
• packages/xl-ai/src/streamTool/jsonSchema.test.ts
• packages/xl-ai/src/streamTool/jsonSchema.ts
• pnpm-workspace.yaml
• tests/package.json

💤 Files with no reviewable changes (1)

• packages/xl-ai/package.json

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📝 Walkthrough

Walkthrough

This PR updates array and object handling across editor and AI packages. It adds checks for missing block positions, inline content, comments, and selected blocks. AI request construction now uses shallow spreads, and stream-tool schema comparison uses local recursive equality.

Changes

Editor and shared utilities

Layer / File(s)	Summary
Block positions and content conversion packages/core/src/api/blockManipulation/..., packages/core/src/api/getBlockInfoFromPos.ts, packages/core/src/api/getBlocksChangedByTransaction.ts, packages/core/src/api/nodeConversions/nodeToBlock.ts, packages/core/src/api/parsers/markdown/markdownToHtml.ts, packages/core/src/blocks/ListItem/NumberedListItem/IndexingPlugin.ts, packages/core/src/editor/BlockManager.ts, packages/core/src/editor/transformPasted.ts	Core block APIs and conversion code use .at(-1) and related array syntax. Position and link-content paths now check for missing values. Block traversal uses toReversed().
Editor and extension utilities packages/core/src/editor/managers/ExtensionManager/index.ts, packages/core/src/extensions/..., packages/core/src/util/string.ts, packages/core/src/y/..., packages/core/src/yjs/..., packages/react/src/hooks/useStore.ts	Editor and extension helpers update array construction, sorting, distance calculations, link handling, own-property checks, and color calculations.
Comments and snapshot handling packages/core/src/comments/threadstore/TipTapThreadStore.ts, packages/core/src/extensions/Versioning/Versioning.ts, packages/react/src/components/Comments/ThreadsSidebar.tsx, packages/react/src/components/Versioning/CurrentSnapshot.tsx	Comment insertion checks for an empty thread. Recent-activity sorting falls back to the thread creation time when there are no comments. Snapshot access and sorting use updated array methods.

AI requests and stream tools

Layer / File(s)	Summary
AI request metadata and dependencies packages/xl-ai/src/api/aiRequest/sendMessageWithAIRequest.ts, packages/xl-ai/src/api/aiRequest/sendMessageWithAIRequest.test.ts, packages/xl-ai/package.json	Request metadata and options are rebuilt with shallow spreads instead of deep merges. Tests cover stale document state, custom options, non-object metadata, and omitted inputs. The lodash merge and equality packages and their type packages are removed.
Stream-tool schema comparison packages/xl-ai/src/streamTool/jsonSchema.ts, packages/xl-ai/src/streamTool/jsonSchema.test.ts, pnpm-workspace.yaml, tests/package.json	Schema definitions use local recursive equality to compare duplicate $defs. Tests cover equivalent and conflicting definitions. The @vitest/ui version is updated in the workspace and test package.
AI tool and message access packages/xl-ai/src/api/formats/base-tools/createAddBlocksTool.ts, packages/xl-ai/src/components/FormattingToolbar/AIToolbarButton.tsx, packages/xl-ai/src/prosemirror/changeset.ts, packages/xl-ai-server/src/routes/*	AI tools, toolbar actions, change sets, and server routes update last-element access. The toolbar and tool paths now check for missing selected or added blocks.

Priority: ⬇️ Low

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Refactor

Suggested reviewers: matthewlipski, yousefed

Merge Risk: ⚪ Minimal · up to 34170

No identified issue blocks merging after normal checks.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 62.50% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 32 functions across 32 files. (2 skipped:…	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly identifies the main changes: removing AI Lodash dependencies and simplifying workspace code.
Description check	✅ Passed	The description covers the PR context, rationale, major changes, compatibility impact, and reported testing. It omits the template headings, checklist, and screenshots section, but the key information…

Full details: Docstring Coverage

Explanation

Docstring coverage is 62.50% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 32 functions across 32 files. (2 skipped: 2 unsupported.)

• Fix all pre-merge checks with AI

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Commit to this branch
• Create a new PR

🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

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