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>

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;