feat: add Hermes and GBrain host configs

Hermes: tool rewrites for terminal/read_file/patch/delegate_task,
paths to ~/.hermes/skills/gstack, AGENTS.md config file.

GBrain: coding skills become brain-aware when GBrain mod is installed.
Same tool rewrites as OpenClaw (agents spawn Claude Code via ACP).
GBRAIN_CONTEXT_LOAD and GBRAIN_SAVE_RESULTS NOT suppressed on gbrain
host, enabling brain-first lookup and save-to-brain behavior.

Both registered in hosts/index.ts with setup script redirect messages.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitignore

@@ -13,6 +13,8 @@ bin/gstack-global-discover
 .slate/
 .cursor/
 .openclaw/
+.hermes/
+.gbrain/
 .context/
 extension/.auth.json
 .gstack-worktrees/

hosts/gbrain.ts

@@ -0,0 +1,73 @@
+import type { HostConfig } from '../scripts/host-config';
+
+const gbrain: HostConfig = {
+  name: 'gbrain',
+  displayName: 'GBrain',
+  cliCommand: 'gbrain',
+  cliAliases: [],
+
+  globalRoot: '.gbrain/skills/gstack',
+  localSkillRoot: '.gbrain/skills/gstack',
+  hostSubdir: '.gbrain',
+  usesEnvVars: true,
+
+  frontmatter: {
+    mode: 'allowlist',
+    keepFields: ['name', 'description'],
+    descriptionLimit: null,
+  },
+
+  generation: {
+    generateMetadata: false,
+    skipSkills: ['codex'],
+    includeSkills: [],
+  },
+
+  pathRewrites: [
+    { from: '~/.claude/skills/gstack', to: '~/.gbrain/skills/gstack' },
+    { from: '.claude/skills/gstack', to: '.gbrain/skills/gstack' },
+    { from: '.claude/skills', to: '.gbrain/skills' },
+    { from: 'CLAUDE.md', to: 'AGENTS.md' },
+  ],
+  toolRewrites: {
+    'use the Bash tool': 'use the exec tool',
+    'use the Write tool': 'use the write tool',
+    'use the Read tool': 'use the read tool',
+    'use the Edit tool': 'use the edit tool',
+    'use the Agent tool': 'use sessions_spawn',
+    'use the Grep tool': 'search for',
+    'use the Glob tool': 'find files matching',
+    'the Bash tool': 'the exec tool',
+    'the Read tool': 'the read tool',
+    'the Write tool': 'the write tool',
+    'the Edit tool': 'the edit tool',
+  },
+
+  // GBrain gets brain-aware resolvers. All other hosts suppress these.
+  suppressedResolvers: [
+    'DESIGN_OUTSIDE_VOICES',
+    'ADVERSARIAL_STEP',
+    'CODEX_SECOND_OPINION',
+    'CODEX_PLAN_REVIEW',
+    'REVIEW_ARMY',
+    // NOTE: GBRAIN_CONTEXT_LOAD and GBRAIN_SAVE_RESULTS are NOT suppressed here.
+    // GBrain is the only host that gets brain-first lookup and save-to-brain behavior.
+  ],
+
+  runtimeRoot: {
+    globalSymlinks: ['bin', 'browse/dist', 'browse/bin', 'gstack-upgrade', 'ETHOS.md'],
+    globalFiles: {
+      'review': ['checklist.md', 'TODOS-format.md'],
+    },
+  },
+
+  install: {
+    prefixable: false,
+    linkingStrategy: 'symlink-generated',
+  },
+
+  coAuthorTrailer: 'Co-Authored-By: GBrain Agent <agent@gbrain.dev>',
+  learningsMode: 'basic',
+};
+
+export default gbrain;

hosts/hermes.ts

@@ -0,0 +1,72 @@
+import type { HostConfig } from '../scripts/host-config';
+
+const hermes: HostConfig = {
+  name: 'hermes',
+  displayName: 'Hermes',
+  cliCommand: 'hermes',
+  cliAliases: [],
+
+  globalRoot: '.hermes/skills/gstack',
+  localSkillRoot: '.hermes/skills/gstack',
+  hostSubdir: '.hermes',
+  usesEnvVars: true,
+
+  frontmatter: {
+    mode: 'allowlist',
+    keepFields: ['name', 'description'],
+    descriptionLimit: null,
+  },
+
+  generation: {
+    generateMetadata: false,
+    skipSkills: ['codex'],
+    includeSkills: [],
+  },
+
+  pathRewrites: [
+    { from: '~/.claude/skills/gstack', to: '~/.hermes/skills/gstack' },
+    { from: '.claude/skills/gstack', to: '.hermes/skills/gstack' },
+    { from: '.claude/skills', to: '.hermes/skills' },
+    { from: 'CLAUDE.md', to: 'AGENTS.md' },
+  ],
+  toolRewrites: {
+    'use the Bash tool': 'use the terminal tool',
+    'use the Write tool': 'use the patch tool',
+    'use the Read tool': 'use the read_file tool',
+    'use the Edit tool': 'use the patch tool',
+    'use the Agent tool': 'use delegate_task',
+    'use the Grep tool': 'search for',
+    'use the Glob tool': 'find files matching',
+    'the Bash tool': 'the terminal tool',
+    'the Read tool': 'the read_file tool',
+    'the Write tool': 'the patch tool',
+    'the Edit tool': 'the patch tool',
+  },
+
+  suppressedResolvers: [
+    'DESIGN_OUTSIDE_VOICES',
+    'ADVERSARIAL_STEP',
+    'CODEX_SECOND_OPINION',
+    'CODEX_PLAN_REVIEW',
+    'REVIEW_ARMY',
+    'GBRAIN_CONTEXT_LOAD',
+    'GBRAIN_SAVE_RESULTS',
+  ],
+
+  runtimeRoot: {
+    globalSymlinks: ['bin', 'browse/dist', 'browse/bin', 'gstack-upgrade', 'ETHOS.md'],
+    globalFiles: {
+      'review': ['checklist.md', 'TODOS-format.md'],
+    },
+  },
+
+  install: {
+    prefixable: false,
+    linkingStrategy: 'symlink-generated',
+  },
+
+  coAuthorTrailer: 'Co-Authored-By: Hermes Agent <agent@nousresearch.com>',
+  learningsMode: 'basic',
+};
+
+export default hermes;

hosts/index.ts

@@ -14,9 +14,11 @@ import opencode from './opencode';
 import slate from './slate';
 import cursor from './cursor';
 import openclaw from './openclaw';
+import hermes from './hermes';
+import gbrain from './gbrain';
 
 /** All registered host configs. Add new hosts here. */
-export const ALL_HOST_CONFIGS: HostConfig[] = [claude, codex, factory, kiro, opencode, slate, cursor, openclaw];
+export const ALL_HOST_CONFIGS: HostConfig[] = [claude, codex, factory, kiro, opencode, slate, cursor, openclaw, hermes, gbrain];
 
 /** Map from host name to config. */
 export const HOST_CONFIG_MAP: Record<string, HostConfig> = Object.fromEntries(
@@ -63,4 +65,4 @@ export function getExternalHosts(): HostConfig[] {
 }
 
 // Re-export individual configs for direct import
-export { claude, codex, factory, kiro, opencode, slate, cursor, openclaw };
+export { claude, codex, factory, kiro, opencode, slate, cursor, openclaw, hermes, gbrain };

setup

@@ -67,7 +67,29 @@ case "$HOST" in
     echo "  3. See docs/OPENCLAW.md for the full architecture"
     echo ""
     exit 0 ;;
-  *) echo "Unknown --host value: $HOST (expected claude, codex, kiro, factory, openclaw, or auto)" >&2; exit 1 ;;
+  hermes)
+    echo ""
+    echo "Hermes integration uses the same model as OpenClaw — Hermes spawns"
+    echo "Claude Code sessions, and gstack provides methodology artifacts."
+    echo ""
+    echo "To integrate gstack with Hermes:"
+    echo "  1. Tell your Hermes agent: 'install gstack for hermes'"
+    echo "  2. Or generate artifacts: bun run gen:skill-docs --host hermes"
+    echo ""
+    exit 0 ;;
+  gbrain)
+    echo ""
+    echo "GBrain is a mod for gstack — it makes coding skills brain-aware."
+    echo "GBrain generates brain-enhanced skill variants that search your brain"
+    echo "for context before starting and save results after finishing."
+    echo ""
+    echo "To generate brain-aware skills:"
+    echo "  bun run gen:skill-docs --host gbrain"
+    echo ""
+    echo "GBrain setup and brain skills ship from the GBrain repo."
+    echo ""
+    exit 0 ;;
+  *) echo "Unknown --host value: $HOST (expected claude, codex, kiro, factory, openclaw, hermes, gbrain, or auto)" >&2; exit 1 ;;
 esac
 
 # ─── Resolve skill prefix preference ─────────────────────────