feat(cron): Cron Recipes — parameterized automation templates across every surface

A 'recipe' is a one-place definition of an automation that every surface
renders natively. The slot schema (cron/recipe_catalog.py) is the single
source of truth; four renderers consume it, and all paths end at the same
cron.jobs.create_job — no second job engine.

Form where there's a screen, conversation where there's a chat line:
- Dashboard / GUI app: a Recipes sub-tab on the Cron page renders each
  recipe's typed slots as a form (time-picker, enum dropdown, free-text);
  submit POSTs /api/cron/recipes/instantiate which fills + creates the job.
- CLI / TUI / messengers: /cron-recipe lists the catalog, shows a recipe's
  fields, or fills + creates from a pasted 'key slot=val' command. The shared
  handler (hermes_cli/cron_recipe_cmd.py) names any missing/invalid slot so
  the agent can ask a targeted follow-up.
- Docs: a generated Cron Recipes catalog page (website, .mdx + React cards)
  shows each recipe with a copy-paste command and a 'Send to App' button.
- Desktop: a hermes:// URL scheme (Electron single-instance lock +
  setAsDefaultProtocolClient + open-url/second-instance) routes
  hermes://cron-recipe/<key>?slot=val into the chat composer pre-filled.

Typed slots (time/enum/text/weekdays) with defaults: users never type raw
cron — recipes parameterize time-of-day and weekday sets and translate to
cron expressions; a free-text 'schedule' slot is the full-flexibility escape
hatch. Consent-first throughout: nothing schedules without an explicit submit
or send.

Core:
- cron/recipe_catalog.py — CronRecipe + RecipeSlot, 5 curated recipes,
  recipe_form_schema / recipe_slash_command / recipe_deeplink /
  recipe_catalog_entry renderers, fill_recipe (validate + translate to
  create_job kwargs).
- hermes_cli/cron_recipe_cmd.py — shared /cron-recipe handler (CLI + TUI +
  gateway never drift). CommandDef + dispatch in commands.py / cli.py /
  gateway/run.py.

Dashboard: GET /api/cron/recipes + POST /api/cron/recipes/instantiate
(web_server.py), CronRecipes.tsx gallery+form, Segmented sub-tab on CronPage,
api.ts methods + types.

Desktop: hermes:// scheme end to end (main.cjs deep-link router + ready-queue,
preload onDeepLink/signalDeepLinkReady, global.d.ts types, desktop-controller
composer prefill, electron-builder protocols key).

Docs: extract-cron-recipes.py generator wired into prebuild.mjs,
cron-recipes-catalog.mdx + CronRecipesCatalog React component, sidebar entry.
Generated index json gitignored like skills.json.

Tests: 23 core (catalog/slots/schedule-resolution/validation/renderers/command
handler/generator) + 5 web_server endpoint tests. E2E verified end to end:
slot fill -> create_job -> persisted job with correct schedule/deliver/origin.

apps/desktop/src/app/desktop-controller.tsx

@@ -11,6 +11,7 @@ import { Pane, PaneMain } from '@/components/pane-shell'
 import { useMediaQuery } from '@/hooks/use-media-query'
 import { useSkinCommand } from '@/themes/use-skin-command'
 
+import { requestComposerFocus, requestComposerInsert } from './chat/composer/focus'
 import { formatRefValue } from '../components/assistant-ui/directive-text'
 import { getCronJobs, getSessionMessages, listAllProfileSessions, type SessionInfo, triggerCronJob } from '../hermes'
 import { preserveLocalAssistantErrors, toChatMessages } from '../lib/chat-messages'
@@ -266,6 +267,31 @@ export function DesktopController() {
     }
   }, [])
 
+  // hermes:// deep links (e.g. a docs "Send to App" button for a cron recipe).
+  // Build the equivalent /cron-recipe slash command from the payload and drop
+  // it into the composer — the user reviews/edits, then sends; the agent (or
+  // the shared command handler) creates the job. Signal readiness so a link
+  // that arrived during boot is flushed exactly once.
+  useEffect(() => {
+    const unsubscribe = window.hermesDesktop?.onDeepLink?.((payload) => {
+      if (!payload || payload.kind !== 'cron-recipe' || !payload.name) {
+        return
+      }
+      const slots = Object.entries(payload.params || {})
+        .map(([k, v]) => {
+          const sval = /\s/.test(v) ? `"${v.replace(/"/g, '\\"')}"` : v
+          return `${k}=${sval}`
+        })
+        .join(' ')
+      const command = `/cron-recipe ${payload.name}${slots ? ' ' + slots : ''}`
+      requestComposerInsert(command, { mode: 'block', target: 'main' })
+      requestComposerFocus('main')
+    })
+    // Tell the main process the renderer is ready to receive deep links.
+    void window.hermesDesktop?.signalDeepLinkReady?.()
+    return () => unsubscribe?.()
+  }, [])
+
   useEffect(() => {
     const onKeyDown = (event: KeyboardEvent) => {
       if (!$filePreviewTarget.get() && !$previewTarget.get()) {

apps/desktop/src/global.d.ts

@@ -75,6 +75,10 @@ declare global {
       }
       onClosePreviewRequested?: (callback: () => void) => () => void
       onOpenUpdatesRequested?: (callback: () => void) => () => void
+      onDeepLink?: (
+        callback: (payload: { kind: string; name: string; params: Record<string, string> }) => void,
+      ) => () => void
+      signalDeepLinkReady?: () => Promise<{ ok: boolean }>
       onWindowStateChanged?: (callback: (payload: HermesWindowState) => void) => () => void
       onPreviewFileChanged: (callback: (payload: HermesPreviewFileChanged) => void) => () => void
       onBackendExit: (callback: (payload: BackendExit) => void) => () => void