feat: Add indexing group to CodexLens environment variable schema

- Introduced a new `indexing` group in the environment variable schema with fields for AST grep usage, static graph enablement, and relationship types.
- Updated the CodexLens configuration to support new indexing features.

feat: Enhance DashboardToolbar with session and fullscreen controls

- Added props for session sidebar visibility and fullscreen mode to the DashboardToolbar component.
- Implemented handlers for toggling session sidebar and fullscreen mode.
- Updated the toolbar layout to include session sidebar toggle and fullscreen button.

refactor: Improve TerminalGrid and TerminalPane components

- Refactored GridGroupRenderer to handle pane size changes directly via store.
- Enhanced TerminalPane to remove unused file browser logic and improve layout handling.
- Updated key generation for child panes to ensure stability.

feat: Extend CodexLens API for staged Stage-2 expansion modes

- Added support for `staged_stage2_mode` in the CodexLens API, allowing for different expansion strategies.
- Updated semantic search handlers to process new stage-2 mode parameter.
- Implemented validation and handling for new stage-2 modes in the backend.

test: Add benchmarks for staged Stage-2 modes comparison

- Created a benchmark script to compare performance and results of different staged Stage-2 modes.
- Included metrics for latency, overlap, and diversity across modes.

ccw/frontend/src/locales/en/codexlens.json

@@ -239,6 +239,10 @@
     "fusionStrategy.binary": "Binary",
     "fusionStrategy.hybrid": "Hybrid",
     "fusionStrategy.staged": "Staged",
+    "stagedStage2Mode": "Staged Stage 2",
+    "stagedStage2Mode.precomputed": "Precomputed (graph_neighbors)",
+    "stagedStage2Mode.realtime": "Realtime (LSP)",
+    "stagedStage2Mode.static_global_graph": "Static Global Graph",
     "lspStatus": "LSP Status",
     "lspAvailable": "Semantic search available",
     "lspUnavailable": "Semantic search unavailable",
@@ -285,6 +289,7 @@
     "reranker": "Reranker",
     "concurrency": "Concurrency",
     "cascade": "Cascade Search",
+    "indexing": "Indexing",
     "chunking": "Chunking"
   },
   "envField": {
@@ -305,6 +310,9 @@
     "searchStrategy": "Search Strategy",
     "coarseK": "Coarse K",
     "fineK": "Fine K",
+    "useAstGrep": "Use ast-grep",
+    "staticGraphEnabled": "Static Graph",
+    "staticGraphRelationshipTypes": "Relationship Types",
     "stripComments": "Strip Comments",
     "stripDocstrings": "Strip Docstrings",
     "testFilePenalty": "Test File Penalty",