fix(opencode): drop mcp shrink auto-registration and fix tools schema

agents/cavecrew-builder.md

@@ -6,7 +6,12 @@ description: >
   scope. Returns caveman diff receipt. Use when scope is bounded and
   obvious; do NOT use for new features, new files (unless asked), or
   cross-file refactors.
-tools: [Read, Edit, Write, Grep, Glob]
+tools:
+  Read: true
+  Edit: true
+  Write: true
+  Grep: true
+  Glob: true
 ---
 
 Caveman-ultra. Drop articles/filler. Code/paths exact, backticked. No narration.

agents/cavecrew-investigator.md

@@ -5,7 +5,11 @@ description: >
   "what calls Y", "list all uses of Z", "map this directory". Output is
   caveman-compressed so the main thread eats ~60% fewer tokens than
   vanilla Explore. Refuses to suggest fixes.
-tools: [Read, Grep, Glob, Bash]
+tools:
+  Read: true
+  Grep: true
+  Glob: true
+  Bash: true
 model: haiku
 ---
 

agents/cavecrew-reviewer.md

@@ -5,7 +5,10 @@ description: >
   no scope creep. Output format `path:line: <emoji> <severity>: <problem>. <fix>.`
   Use for "review this PR", "review my diff", "audit this file". Skips
   formatting nits unless they change meaning.
-tools: [Read, Grep, Bash]
+tools:
+  Read: true
+  Grep: true
+  Bash: true
 model: haiku
 ---
 

bin/install.js

@@ -475,7 +475,6 @@ const OPENCODE_AGENTS_MD_END = '<!-- caveman-end -->';
 
 function opencodeConfigDir() {
   if (process.env.XDG_CONFIG_HOME) return path.join(process.env.XDG_CONFIG_HOME, 'opencode');
-  if (IS_WIN) return path.join(process.env.APPDATA || path.join(os.homedir(), 'AppData', 'Roaming'), 'opencode');
   return path.join(os.homedir(), '.config', 'opencode');
 }
 
@@ -633,15 +632,8 @@ function installOpencode(ctx) {
       cfg.plugin.push(OPENCODE_PLUGIN_REL);
     }
     if (opts.withMcpShrink) {
-      if (!cfg.mcp || typeof cfg.mcp !== 'object') cfg.mcp = {};
-      if (!cfg.mcp['caveman-shrink']) {
-        cfg.mcp['caveman-shrink'] = {
-          type: 'local',
-          command: ['npx', '-y', MCP_SHRINK_PKG],
-          enabled: true,
-        };
-        process.stdout.write('  registered caveman-shrink MCP server\n');
-      }
+      process.stdout.write('  installed caveman-shrink package (needs manual MCP wrapping)\n');
+      process.stdout.write(`  see: https://github.com/${REPO}/tree/main/src/mcp-servers/caveman-shrink\n`);
     }
     SETTINGS.writeSettings(opencodeJson, cfg);
     process.stdout.write(`  patched: ${opencodeJson}\n`);
@@ -801,13 +793,9 @@ function installMcpShrink(ctx) {
     note('    src/hooks/README.md to your Claude Code MCP config manually.');
     return { kind: 'skip', why: 'manual config required' };
   }
-  const r = runSpawn('claude', ['mcp', 'add', 'caveman-shrink', '--', 'npx', '-y', MCP_SHRINK_PKG], null, opts.dryRun);
-  if ((r.status || 0) === 0) {
-    note('    registered. Wrap an upstream by editing the mcpServers entry — see:');
-    note(`    https://github.com/${REPO}/tree/main/src/mcp-servers/caveman-shrink`);
-    return { kind: 'ok' };
-  }
-  return { kind: 'fail', why: 'claude mcp add failed' };
+  note('    installed caveman-shrink package (needs manual MCP wrapping).');
+  note(`    see: https://github.com/${REPO}/tree/main/src/mcp-servers/caveman-shrink`);
+  return { kind: 'ok' };
 }
 
 // ── Init writers (per-repo rule files) ────────────────────────────────────

src/plugins/opencode/commands/caveman-compress.md

@@ -0,0 +1,7 @@
+---
+description: Compress natural language memory files into caveman format
+---
+Compress natural language memory files (CLAUDE.md, todos, preferences) into caveman format to save input tokens.
+Preserves all technical substance, code, URLs, and structure.
+
+Use the `caveman-compress` skill.

src/plugins/opencode/plugin.js

@@ -50,12 +50,6 @@ function opencodeConfigDir() {
   if (process.env.XDG_CONFIG_HOME) {
     return path.join(process.env.XDG_CONFIG_HOME, 'opencode');
   }
-  if (process.platform === 'win32') {
-    return path.join(
-      process.env.APPDATA || path.join(os.homedir(), 'AppData', 'Roaming'),
-      'opencode'
-    );
-  }
   return path.join(os.homedir(), '.config', 'opencode');
 }