chore: migrate ace related api docs to new cm one

[bajrangCoder]

No description provided.

[greptile-apps]

Greptile Summary

Comprehensive migration of documentation from Ace editor APIs to CodeMirror 6, updating all plugin development guides and API references to reflect the new editor architecture.

Key Changes

• New API Documentation: Added complete docs for commands, editorLanguages, editorThemes, lsp, and fileHandlers APIs
• Migration Guides: Converted ace.md into a migration guide with compatibility layer documentation and quick reference map
• Updated Examples: All code examples now use CodeMirror-first patterns (e.g., acode.require("commands") instead of editorManager.editor.commands)
• Type Updates: Changed type definitions to reflect CodeMirror types (EditorView, Proxy<EditorState>, etc.)
• New Plugin Lifecycle Docs: Completely rewrote understanding-plugin.md with comprehensive init/unmount contract documentation
• Settings Documentation: Updated editor settings to reflect CodeMirror options, removed obsolete Ace-era settings

Documentation Quality

• Clear migration paths with side-by-side comparisons
• Comprehensive examples including full plugin implementations
• Backward compatibility documented where it exists
• Cross-references added between related APIs

Confidence Score: 5/5

• This PR is safe to merge - it's a documentation-only update with no code changes to the application itself
• All changes are documentation updates migrating from Ace to CodeMirror APIs. The changes are well-structured, comprehensive, and maintain backward compatibility information. No runtime code is modified.
• No files require special attention - all documentation changes are clear and well-organized

Important Files Changed

Filename	Overview
docs/global-apis/ace.md	Repurposed as migration guide from Ace to CodeMirror with compatibility layer documentation and quick migration map
docs/global-apis/acode.md	Updated examples to use acode.require("commands") instead of editorManager.editor.commands, added new APIs (format, formatters, getFormatterFor, waitForPlugin, clearBrokenPluginMark)
docs/global-apis/editor-manager.md	Completely rewritten to document editorManager.editor as CodeMirror EditorView with examples and Ace compatibility layer helpers
docs/utilities/ace-modes.md	Renamed to Editor Languages (CodeMirror), documented new editorLanguages API with register/unregister methods, kept aceModes alias for backward compatibility
docs/utilities/editor-themes.md	New file documenting comprehensive CodeMirror theme API with registration, helpers, and complete plugin examples
docs/utilities/commands.md	New file documenting Commands API as preferred method for command registration/removal over editorManager.editor.commands
docs/advanced-apis/lsp.md	New comprehensive LSP API documentation with WebSocket transport details, AXS bridge setup examples, and server registration patterns
docs/getting-started/understanding-plugin.md	Completely rewritten with comprehensive plugin lifecycle documentation including init/unmount contract, runtime context, and failure behavior
user-guide/settings/editor-settings.md	Completely rewritten to document CodeMirror-based settings, removed Ace-era options, added new options (Rainbow Brackets, Indent Guides, Lint Gutter)

_{Last reviewed commit: cc9d194}