feat(install): add Hermes Agent runtime support (#2841)

Adds Hermes Agent as a supported installation target. Users can run
\`npx get-shit-done-cc --hermes\` to install all 86 GSD commands as
skills under \`~/.hermes/skills/gsd-*/SKILL.md\`, following the same
open skill standard as Claude Code 2.1.88+, Qwen Code, Antigravity,
Trae, Augment, and Codebuddy.

Hermes Agent is an open-source AI agent framework by Nous Research
(NousResearch/hermes-agent, MIT). Its skill loader accepts the Claude
skill format as-is: frontmatter parsed with PyYAML SafeLoader (unknown
keys like \`allowed-tools\` / \`argument-hint\` ignored), body XML tags
(\`<objective>\`, \`<execution_context>\`, \`<process>\`) passed directly
to the model. Compatibility proven end-to-end with all 86 GSD skills
loading cleanly, \`skill_view()\` returning full bodies, and
\`build_skills_system_prompt()\` emitting them into the agent system
prompt — zero Hermes code changes required.

Changes:
- \`bin/install.js\`: --hermes flag, getDirName/getGlobalDir/getConfigDirFromHome
  support, HERMES_HOME env var (native to Hermes — used for profile
  mode / Docker deploys), install/uninstall pipelines, interactive
  picker option 10 (alphabetical: between Gemini and Kilo), .hermes
  path replacements in copyCommandsAsClaudeSkills and
  copyWithPathReplacement, legacy commands/gsd cleanup, CLAUDE.md ->
  HERMES.md and "Claude Code" -> "Hermes Agent" content rewrites in
  skills/agents/hooks, runtime-appropriate finish message.
- \`get-shit-done/bin/lib/core.cjs\`: add hermes to KNOWN_RUNTIMES;
  add RUNTIME_PROFILE_MAP.hermes with OpenRouter-slug defaults
  (Hermes is provider-agnostic; these defaults resolve across
  OpenRouter, native Anthropic, and Copilot via Hermes' aggregator-
  aware resolver, and are overridable per-tier via
  model_profile_overrides.hermes.{opus,sonnet,haiku}).
- \`README.md\`: Hermes Agent in tagline, runtime list, verification
  command, install/uninstall examples, \`--hermes\` flag reference.
- \`tests/hermes-install.test.cjs\`: new, 14 tests covering directory
  mapping, HERMES_HOME env var precedence, install/uninstall
  lifecycle, user-skill preservation, engine cleanup.
- \`tests/hermes-skills-migration.test.cjs\`: new, 11 tests covering
  frontmatter conversion, path replacement (~/.claude/ ->
  \$HERMES_HOME/skills/), CLAUDE.md -> HERMES.md, "Claude Code" ->
  "Hermes Agent", stale skill cleanup, SKILL.md format validation.
- \`tests/multi-runtime-select.test.cjs\`: updated for new option
  numbering (hermes=10, kilo=11, opencode=12, qwen=13, trae=14,
  windsurf=15, all=16).
- \`tests/kilo-install.test.cjs\`: updated assertions for Kilo having
  moved from option 10 to option 11.

Closes #2841

Implementation notes:
- Zero custom code paths: Hermes reuses copyCommandsAsClaudeSkills()
  identical to Qwen Code / Antigravity pattern.
- Path replacement: ~/.claude/, \$HOME/.claude/, ./.claude/ ->
  .hermes equivalents in skill/agent/hook content.
- Config precedence: --config-dir > HERMES_HOME > ~/.hermes (matches
  how Hermes itself resolves its home directory).
- Legacy cleanup: removes commands/gsd/ if present from a prior
  install, preserving dev-preferences.md (same as Qwen).
- No external dependencies added.

Testing: 5841 / 5841 tests pass (0 failures, 0 regressions)
- 14 new tests in hermes-install.test.cjs
- 11 new tests in hermes-skills-migration.test.cjs
- multi-runtime-select.test.cjs renumbered + 1 new test (single choice for hermes)

tests/multi-runtime-select.test.cjs

@@ -27,13 +27,14 @@ const runtimeMap = {
   '7': 'copilot',
   '8': 'cursor',
   '9': 'gemini',
-  '10': 'kilo',
-  '11': 'opencode',
-  '12': 'qwen',
-  '13': 'trae',
-  '14': 'windsurf'
+  '10': 'hermes',
+  '11': 'kilo',
+  '12': 'opencode',
+  '13': 'qwen',
+  '14': 'trae',
+  '15': 'windsurf'
 };
-const allRuntimes = ['claude', 'antigravity', 'augment', 'cline', 'codebuddy', 'codex', 'copilot', 'cursor', 'gemini', 'kilo', 'opencode', 'qwen', 'trae', 'windsurf'];
+const allRuntimes = ['claude', 'antigravity', 'augment', 'cline', 'codebuddy', 'codex', 'copilot', 'cursor', 'gemini', 'hermes', 'kilo', 'opencode', 'qwen', 'trae', 'windsurf'];
 
 /**
  * Simulate the parsing logic from promptRuntime without requiring readline.
@@ -42,7 +43,7 @@ const allRuntimes = ['claude', 'antigravity', 'augment', 'cline', 'codebuddy', '
 function parseRuntimeInput(input) {
   input = input.trim() || '1';
 
-  if (input === '15') {
+  if (input === '16') {
     return allRuntimes;
   }
 
@@ -78,7 +79,7 @@ describe('multi-runtime selection parsing', () => {
 
   test('space-separated choices return multiple runtimes', () => {
     assert.deepStrictEqual(parseRuntimeInput('1 7 9'), ['claude', 'copilot', 'gemini']);
-    assert.deepStrictEqual(parseRuntimeInput('8 10'), ['cursor', 'kilo']);
+    assert.deepStrictEqual(parseRuntimeInput('8 11'), ['cursor', 'kilo']);
   });
 
   test('mixed comma and space separators work', () => {
@@ -86,24 +87,32 @@ describe('multi-runtime selection parsing', () => {
     assert.deepStrictEqual(parseRuntimeInput('2 , 8'), ['antigravity', 'cursor']);
   });
 
+  test('single choice for hermes', () => {
+    assert.deepStrictEqual(parseRuntimeInput('10'), ['hermes']);
+  });
+
+  test('single choice for kilo', () => {
+    assert.deepStrictEqual(parseRuntimeInput('11'), ['kilo']);
+  });
+
   test('single choice for opencode', () => {
-    assert.deepStrictEqual(parseRuntimeInput('11'), ['opencode']);
+    assert.deepStrictEqual(parseRuntimeInput('12'), ['opencode']);
   });
 
   test('single choice for qwen', () => {
-    assert.deepStrictEqual(parseRuntimeInput('12'), ['qwen']);
+    assert.deepStrictEqual(parseRuntimeInput('13'), ['qwen']);
   });
 
   test('single choice for trae', () => {
-    assert.deepStrictEqual(parseRuntimeInput('13'), ['trae']);
+    assert.deepStrictEqual(parseRuntimeInput('14'), ['trae']);
   });
 
   test('single choice for windsurf', () => {
-    assert.deepStrictEqual(parseRuntimeInput('14'), ['windsurf']);
+    assert.deepStrictEqual(parseRuntimeInput('15'), ['windsurf']);
   });
 
-  test('choice 15 returns all runtimes', () => {
-    assert.deepStrictEqual(parseRuntimeInput('15'), allRuntimes);
+  test('choice 16 returns all runtimes', () => {
+    assert.deepStrictEqual(parseRuntimeInput('16'), allRuntimes);
   });
 
   test('empty input defaults to claude', () => {
@@ -112,13 +121,13 @@ describe('multi-runtime selection parsing', () => {
   });
 
   test('invalid choices are ignored, falls back to claude if all invalid', () => {
-    assert.deepStrictEqual(parseRuntimeInput('16'), ['claude']);
+    assert.deepStrictEqual(parseRuntimeInput('17'), ['claude']);
     assert.deepStrictEqual(parseRuntimeInput('0'), ['claude']);
     assert.deepStrictEqual(parseRuntimeInput('abc'), ['claude']);
   });
 
   test('invalid choices mixed with valid are filtered out', () => {
-    assert.deepStrictEqual(parseRuntimeInput('1,16,7'), ['claude', 'copilot']);
+    assert.deepStrictEqual(parseRuntimeInput('1,17,7'), ['claude', 'copilot']);
     assert.deepStrictEqual(parseRuntimeInput('abc 3 xyz'), ['augment']);
   });
 
@@ -129,12 +138,12 @@ describe('multi-runtime selection parsing', () => {
 
   test('preserves selection order', () => {
     assert.deepStrictEqual(parseRuntimeInput('9,1,7'), ['gemini', 'claude', 'copilot']);
-    assert.deepStrictEqual(parseRuntimeInput('10,2,8'), ['kilo', 'antigravity', 'cursor']);
+    assert.deepStrictEqual(parseRuntimeInput('11,2,8'), ['kilo', 'antigravity', 'cursor']);
   });
 });
 
 describe('install.js source contains multi-select support', () => {
-  test('runtimeMap is defined with all 14 runtimes', () => {
+  test('runtimeMap is defined with all 15 runtimes', () => {
     for (const [key, name] of Object.entries(runtimeMap)) {
       assert.ok(
         installSrc.includes(`'${key}': '${name}'`),
@@ -151,25 +160,29 @@ describe('install.js source contains multi-select support', () => {
     }
   });
 
-  test('all shortcut uses option 15', () => {
+  test('all shortcut uses option 16', () => {
     assert.ok(
-      installSrc.includes("if (input === '15')"),
-      'all shortcut uses option 15'
+      installSrc.includes("if (input === '16')"),
+      'all shortcut uses option 16'
     );
   });
 
-  test('prompt lists Qwen Code as option 12, Trae as option 13 and All as option 15', () => {
+  test('prompt lists Hermes Agent as option 10, Qwen Code as option 13, and All as option 16', () => {
     assert.ok(
-      installSrc.includes('12${reset}) Qwen Code'),
-      'prompt lists Qwen Code as option 12'
+      installSrc.includes('10${reset}) Hermes Agent'),
+      'prompt lists Hermes Agent as option 10'
     );
     assert.ok(
-      installSrc.includes('13${reset}) Trae'),
-      'prompt lists Trae as option 13'
+      installSrc.includes('13${reset}) Qwen Code'),
+      'prompt lists Qwen Code as option 13'
     );
     assert.ok(
-      installSrc.includes('15${reset}) All'),
-      'prompt lists All as option 15'
+      installSrc.includes('14${reset}) Trae'),
+      'prompt lists Trae as option 14'
+    );
+    assert.ok(
+      installSrc.includes('16${reset}) All'),
+      'prompt lists All as option 16'
     );
   });