feat: Domain 2 Phase 3-4 — wiki article tool, DCP compress toggle, Go sidecar deprecation

Phase 3: get_wiki_article tool wraps codesight_get_wiki_article MCP
(cached, persistent codebase wiki). DCP compress toggle on
get_codebase_overview (compress=true for large projects >50 files).

Phase 4: Deprecation markers on Go codecontext sidecar. Warning log
in callCodecontext(), deprecation comments in factory.ts and
docker-compose.yml. Sidecar remains functional — removal deferred.

apps/server/src/services/tools/codecontext/factory.ts

@@ -2,6 +2,12 @@ import { z } from 'zod';
 import type { ToolDef } from '../types.js';
 import { callCodecontext, type CodecontextResponse } from '../../codecontext_client.js';
 
+// DEPRECATED (Phase 4, Domain 2, v2.8.14): This factory builds ToolDefs that
+// route through the Go codecontext sidecar via callCodecontext(). Superseded
+// by direct boocontext MCP tool wrappers. Keep functional for backward
+// compatibility — old codecontext tools still use HTTP. New tools should use
+// the boocontext MCP server instead of adding entries here.
+//
 // Shared factory for the 12 codecontext shim ToolDefs.
 // Each shim provides name/schema/description/jsonParameters/mapArgs; the
 // factory builds the ToolDef and returns both the ToolDef and the standalone

apps/server/src/services/tools/codecontext/get_codebase_overview.ts

@@ -3,6 +3,7 @@ import { makeCodecontextTool } from './factory.js';
 
 export const GetCodebaseOverviewInput = z.object({
   include_stats: z.boolean().optional(),
+  compress: z.boolean().optional().describe('Apply DCP compression for large projects (>50 files)'),
 });
 export type GetCodebaseOverviewInputT = z.infer<typeof GetCodebaseOverviewInput>;
 
@@ -24,10 +25,18 @@ const { toolDef: getCodebaseOverview, execute: executeGetCodebaseOverview } =
           type: 'boolean',
           description: 'Include file count, symbol count, language stats. Defaults to true.',
         },
+        compress: {
+          type: 'boolean',
+          description: 'Apply DCP compression for large projects (>50 files)',
+        },
       },
       additionalProperties: false,
     },
-    mapArgs: (input) => ({ include_stats: input.include_stats ?? true }),
+    mapArgs: (input) => {
+      const args: Record<string, unknown> = { include_stats: input.include_stats ?? true };
+      if (input.compress) args['compress'] = true;
+      return args;
+    },
   });
 
 export { getCodebaseOverview, executeGetCodebaseOverview };

apps/server/src/services/tools/codecontext/index.ts

@@ -18,3 +18,4 @@ export { getCodeHealth } from './get_code_health.js';
 export { getCodeImpact } from './get_code_impact.js';
 export { getTypeInfo } from './get_type_info.js';
 export { getCodeMap } from './get_code_map.js';
+export { getWikiArticle } from './get_wiki_article.js';