docs: remove obsolete implementation plans

docs/plans/2026-05-12-graph-first-language-expansion.md

@@ -5,7 +5,7 @@
 
 ## Context
 
-The repo has an established language-support workflow: define support surface, add a language definition, wire native grammars and reduced-mode behavior, add fixtures/tests, then update parity/scenario docs and the agent skill surface. Follow [docs/adding-language-support.md](../../adding-language-support.md) exactly.
+The repo has an established language-support workflow: define support surface, add a language definition, wire native grammars and reduced-mode behavior, add fixtures/tests, then update parity/scenario docs and the agent skill surface. Follow [docs/adding-language-support.md](../adding-language-support.md) exactly.
 
 This plan intentionally targets graph-first support. Each language should provide parsing, chunking, top-level symbol extraction, and static dependency edges. It should not claim full cross-file semantic navigation until shared `goto`, `references`, and native semantic parity tests prove that behavior.
 
@@ -578,9 +578,9 @@ git commit -m "docs: finalize graph-first language support"
 
 ## References
 
-- [Language support checklist](../../adding-language-support.md)
-- [Language parity matrix](../../language-parity.md)
-- [Scenario catalog](../../scenario-catalog.md)
+- [Language support checklist](../adding-language-support.md)
+- [Language parity matrix](../language-parity.md)
+- [Scenario catalog](../scenario-catalog.md)
 - [`tree-sitter-scala` on npm](https://www.npmjs.com/package/tree-sitter-scala)
 - [`tree-sitter-lua` on npm](https://www.npmjs.com/package/tree-sitter-lua)
 - [`tree-sitter-powershell` on npm](https://www.npmjs.com/package/tree-sitter-powershell)

docs/plans/2026-07-03-03-shared-server-lifecycle.md

@@ -18,7 +18,7 @@ codegraph server stop --root .
 
 Keep `codegraph mcp serve` as the low-level primitive. `server start` is a convenience wrapper around it.
 
-Shared servers use the immutable Windows native cache described in [`2026-07-12-windows-native-runtime-cache-updates.md`](./2026-07-12-windows-native-runtime-cache-updates.md). Their registry and health output must preserve the version captured at server start, surface installed-version drift, and require an explicit restart rather than replacing mapped runtime files or terminating clients automatically.
+Shared servers must use the current immutable Windows native cache. Their registry and health output must preserve the version captured at server start, surface installed-version drift, and require an explicit restart rather than replacing mapped runtime files or terminating clients automatically.
 
 ## Server registry