refactor(hosts): defineHost() factory — 10 copy-paste host files become declarations

hosts/*.ts were ten copies of one file: runtimeRoot byte-identical in 9/10,
pathRewrites mechanically derivable from the host name for 7/10, the 11-entry
toolRewrites map byte-identical between openclaw and gbrain, and every asset
change a 10-file edit (cursor and slate had already fallen out of three other
hand-maintained lists). defineHost() owns the defaults; each host file now
declares only what makes it different (slate/cursor: 8 lines each). Shared
constants: CROSS_MODEL_RESOLVERS, GBRAIN_RESOLVERS, EXEC_STYLE_TOOL_REWRITES.
Genuinely-different things stayed explicit: codex/factory $GSTACK_ROOT
rewrites, hermes's tool vocabulary, claude's denylist+prefixable install,
opencode's wider runtimeRoot.

Proof: JSON.stringify(ALL_HOST_CONFIGS) dump-diff before/after EMPTY (and a
runtime walk confirmed no function-valued or undefined-keyed fields, so the
JSON diff is complete); gen:skill-docs --host all zero-diff; host-config +
gen-skill-docs + idempotency suites 485/485. Host files 595 -> 285 lines.
docs/ADDING_A_HOST.md teaches the factory pattern.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

hosts/hermes.ts

@@ -1,21 +1,8 @@
-import type { HostConfig } from '../scripts/host-config';
+import { defineHost, CROSS_MODEL_RESOLVERS } from './define-host';
 
-const hermes: HostConfig = {
+const hermes = defineHost({
   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,
@@ -23,10 +10,7 @@ const hermes: HostConfig = {
     includeSkills: [],
   },
 
-  pathRewrites: [
-    { from: '~/.claude/skills/gstack', to: '~/.hermes/skills/gstack' },
-    { from: '.claude/skills/gstack', to: '.hermes/skills/gstack' },
-    { from: '.claude/skills', to: '.hermes/skills' },
+  extraPathRewrites: [
     { from: 'CLAUDE.md', to: 'AGENTS.md' },
   ],
   toolRewrites: {
@@ -44,30 +28,13 @@ const hermes: HostConfig = {
   },
 
   suppressedResolvers: [
-    'DESIGN_OUTSIDE_VOICES',
-    'ADVERSARIAL_STEP',
-    'CODEX_SECOND_OPINION',
-    'CODEX_PLAN_REVIEW',
-    'REVIEW_ARMY',
+    ...CROSS_MODEL_RESOLVERS,
     // GBRAIN_CONTEXT_LOAD and GBRAIN_SAVE_RESULTS are NOT suppressed.
     // The resolvers handle GBrain-not-installed gracefully ("proceed without brain context").
     // If Hermes has GBrain as a mod, brain features activate automatically.
   ],
 
-  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;