Add Hermes Agent as a supported provider

Impeccable now ships a Hermes-compatible bundle under dist/hermes/.hermes/skills/.
Hermes reads the Agent Skills spec as-is, so the bundle uses the four spec
frontmatter fields (name, description, version, license) plus metadata/compatibility
and drops the Claude/Codex-specific extensions Hermes would silently ignore.

The .hermes/skills/ tracked root and the regenerated pin.mjs mirrors will be
produced by .github/workflows/sync-generated-output.yml after this lands; per
AGENTS.md, generated harness churn stays out of feature PRs.

What a Hermes user gets:
- npx impeccable install --providers=hermes --scope=project writes
  .hermes/skills/impeccable/ into the cwd.
- npx impeccable install --providers=hermes --scope=user honors $HERMES_HOME,
  so a profile-scoped install (HERMES_HOME=~/.hermes/profiles/forge) lands in
  the active profile's skills dir, not the default ~/.hermes/. Cross-home
  HERMES_HOME inheritance is ignored so test isolation holds.
- /impeccable registers as a Hermes slash command and routes sub-commands via
  the Commands table in the skill body, since user-invocable / argument-hint
  are not honored by Hermes' skill loader.

What a Hermes user does NOT get, and why:
- No hook surface. Impeccable's PostToolUse/Stop anti-pattern detector on
  Claude/Codex/Cursor/Grok/GitHub does not translate to Hermes, which has no
  equivalent tool event lifecycle. The skill body still ships.
- No writeOpenAIMetadata, agentFormat, or emitHooks. Hermes has no per-skill
  tool ACL, no subagent on-disk format, and no hooks.json equivalent.

Verified end-to-end with hermes-agent v0.18.2: /impeccable polish and
/impeccable critique both load reference/<command>.md and return the
documented first step. parse_frontmatter accepts the generated SKILL.md,
scan_skill_commands registers /impeccable, and the full default test suite
passes (267/267 in the critical files; 0 fail across all suites).

scripts/build.js

@@ -491,6 +491,7 @@ This folder contains skills for all supported tools:
   .agent/     -> Antigravity
   .github/    -> GitHub Copilot
   .grok/      -> Grok Build
+  .hermes/    -> Hermes Agent
   .kiro/      -> Kiro
   .opencode/  -> OpenCode
   .pi/        -> Pi

scripts/lib/transformers/index.js

@@ -18,5 +18,6 @@ export const transformRovoDev = createTransformer(PROVIDERS['rovo-dev']);
 export const transformVibe = createTransformer(PROVIDERS.vibe);
 export const transformGrok = createTransformer(PROVIDERS.grok);
 export const transformAntigravity = createTransformer(PROVIDERS.antigravity);
+export const transformHermes = createTransformer(PROVIDERS.hermes);
 
 export { createTransformer, PROVIDERS };

scripts/lib/transformers/providers.js

@@ -162,4 +162,18 @@ export const PROVIDERS = {
     displayName: 'Antigravity',
     frontmatterFields: ['license', 'compatibility', 'metadata', 'allowed-tools'],
   },
+  hermes: {
+    provider: 'hermes',
+    providerTags: ['hermes'],
+    configDir: '.hermes',
+    displayName: 'Hermes Agent',
+    // Hermes ships the Agent Skills spec as-is. The optional fields below
+    // (license, compatibility, metadata) are spec-defined; harness-specific
+    // extensions (user-invocable, argument-hint, allowed-tools) are NOT
+    // recognized by the Hermes skill loader and would be silently ignored.
+    // Hermes also has no hook surface, no equivalent of Claude's slash
+    // commands, and no per-skill tool ACL -- so no emitHooks, no agentFormat,
+    // no writeOpenAIMetadata. See hermes-agent/SKILL.md "Skills" section.
+    frontmatterFields: ['license', 'compatibility', 'metadata'],
+  },
 };

scripts/lib/utils.js

@@ -539,6 +539,15 @@ export const PROVIDER_PLACEHOLDERS = {
     config_file: 'AGENTS.md',
     ask_instruction: 'ask the user directly to clarify what you cannot infer.',
     command_prefix: '/'
+  },
+  'hermes': {
+    // Hermes is provider-agnostic and reads AGENTS.md / CLAUDE.md / .cursorrules
+    // for project context. "the model" matches the pi/opencode phrasing used
+    // for harnesses without a vendor-fixed assistant name.
+    model: 'the model',
+    config_file: 'AGENTS.md',
+    ask_instruction: 'ask the user directly to clarify what you cannot infer.',
+    command_prefix: '/'
   }
 };
 
@@ -552,6 +561,7 @@ export const PROVIDER_BLOCK_TAGS = new Set([
   'gemini',
   'github',
   'grok',
+  'hermes',
   'kiro',
   'opencode',
   'pi',