feat: add instant "Fix this" links to PR code reviews (#773)

* feat: add "Fix this" links to PR code reviews

When Claude reviews PRs and identifies fixable issues, it now includes
inline links that open Claude Code with the fix request pre-loaded.

Format: [Fix this →](https://claude.ai/code?q=<URI_ENCODED_INSTRUCTIONS>&repo=<REPO>)

This enables one-click fix requests directly from code review comments.

* feat: add include_fix_links input to control Fix this links

Adds a configurable input to enable/disable the "Fix this →" links
in PR code reviews. Defaults to true for backwards compatibility.

test/install-mcp-server.test.ts

@@ -37,6 +37,7 @@ describe("prepareMcpConfig", () => {
       allowedBots: "",
       allowedNonWriteUsers: "",
       trackProgress: false,
+      includeFixLinks: true,
     },
   };
 

test/mockContext.ts

@@ -25,6 +25,7 @@ const defaultInputs = {
   allowedBots: "",
   allowedNonWriteUsers: "",
   trackProgress: false,
+  includeFixLinks: true,
 };
 
 const defaultRepository = {

test/modes/detector.test.ts

@@ -25,6 +25,7 @@ describe("detectMode with enhanced routing", () => {
       allowedBots: "",
       allowedNonWriteUsers: "",
       trackProgress: false,
+      includeFixLinks: true,
     },
   };
 

test/permissions.test.ts

@@ -73,6 +73,7 @@ describe("checkWritePermissions", () => {
       allowedBots: "",
       allowedNonWriteUsers: "",
       trackProgress: false,
+      includeFixLinks: true,
     },
   });