chore: sync local changes, add Chinese docs and opencode config

CHANGELOG.md

@@ -4,6 +4,25 @@
 
 ### Added
 
+- **Coverage-driven deep-read planning** for whole-project reviews. New
+  `deep_read_plan_tool` greedily selects the highest-risk files needed to
+  close the risk-weighted coverage gap, groups them by directory so each
+  batch maps to one parallel sub-agent, and returns the priority file list.
+  `coverage_tool` now also returns `remaining_weight_to_target` and
+  `priority_deep_read_files` so the reviewing agent knows exactly what still
+  needs to be read to reach the target.
+- **Configurable coverage gate.** `coverage_tool` / `compute_coverage`
+  gained a `gate` parameter: `high_risk` (default, G3 semantics),
+  `overall` (all source files), or `both` (overall **and** high-risk must
+  meet the target).  Weight computation was factored into `_file_weights`
+  and is now shared by `compute_coverage` and `deep_read_plan`.
+- **Cross-round incremental coverage index.** `save_coverage_index_tool`
+  persists the deep-read file list to `.code-review-graph/coverage-index.json`
+  with per-file SHAs. `coverage_tool(include_prior=True)` and
+  `deep_read_plan_tool(include_prior=True)` merge files whose SHA is still
+  current, so later review rounds only re-read files that actually changed
+  or are new instead of starting from zero each time.
+
 - Added the **unified-review** skill that fuses CRG graph context with the
   ai-code-review three-layer scoring methodology and the gstack-review
   fix-first workflow. The skill is read-only: every finding waits for a