skills(formula): optimization flight — cut the cron/template quickrefs and section-5 narration, teach virtual formula fields and fault-open form predicates (net −844 tokens)

content/docs/ai/skills-reference.mdx

@@ -51,7 +51,7 @@ ObjectStack ships **11 skills** — one per authoring domain, plus process skill
 | 6 | [AI](#ai) | `ai` | `skills/objectstack-ai/` | Design ObjectStack AI skills, tools, knowledge sources, conversations, model registry entries, and MCP integrations. |
 | 7 | [API](#api) | `api` | `skills/objectstack-api/` | Design the server-side API surface that an ObjectStack runtime exposes — REST endpoints, auth providers, realtime channels, error envelopes, batch contracts. |
 | 8 | [i18n](#i18n) | `i18n` | `skills/objectstack-i18n/` | Author ObjectStack translation bundles — object/field labels, view text, app navigation strings, automation messages — and configure locale fallback, coverage reporting, and the per-locale source layout. |
-| 9 | [Formula](#formula) | `expression` | `skills/objectstack-formula/` | Author CEL expressions used across ObjectStack — formula fields, field conditional rules (`visibleWhen`, `readonlyWhen`, `requiredWhen`), validation / sharing / visibility predicates, flow conditions, and dynamic seed values. |
+| 9 | [Formula](#formula) | `expression` | `skills/objectstack-formula/` | Author CEL expressions used across ObjectStack — formula fields, field conditional rules (`visibleWhen`, `readonlyWhen`, `requiredWhen`), validation / sharing / visibility predicates, flow conditions, and dynamic seed values. This is the companion skill that objectstack-data, -ui, -api and -automation each tell you to load alongside them. |
 | 10 | [PM Dispatch](#pm-dispatch) | `process` | `skills/objectstack-pm-dispatch/` | Run a project-manager dispatch loop over a GitHub backlog: triage and queue ready issues, claim each one, dispatch it to a parallel developer agent that returns a structured JSON report, review the results against GitHub, and drive accepted pull requests to landing — escalating to the maintainer only what genuinely needs a human decision. Ships the developer-agent operating template the loop injects into every dispatch (no custom agent types required). |
 | 11 | [Upgrade](#upgrade) | `process` | `skills/objectstack-upgrade/` | Upgrade an ObjectStack metadata project across a protocol major — run the deterministic conversion chain, then work the semantic residue the chain cannot express (intent choices, custom code on retired APIs, stale prose) to a decision with the project's owner, and finish with a green `validate` plus a human-readable upgrade report. |
 
@@ -173,11 +173,11 @@ Do not use for general i18n library questions unrelated to ObjectStack bundles.
 
 **Domain** `expression` · **Path** `skills/objectstack-formula/`
 
-Author CEL expressions used across ObjectStack — formula fields, field conditional rules (`visibleWhen`, `readonlyWhen`, `requiredWhen`), validation / sharing / visibility predicates, flow conditions, and dynamic seed values.
+Author CEL expressions used across ObjectStack — formula fields, field conditional rules (`visibleWhen`, `readonlyWhen`, `requiredWhen`), validation / sharing / visibility predicates, flow conditions, and dynamic seed values. This is the companion skill that objectstack-data, -ui, -api and -automation each tell you to load alongside them.
 
 Use when the user is writing an `F`, `P`, or `cel` tagged-template literal, or asks "how do I express X as a formula / predicate".
 
-Do not use for SQL fragments (driver-native), cron schedules (cron dialect), or L2 hook bodies (those belong in objectstack-data).
+Do not use for SQL fragments (driver-native) or L2 hook bodies (those belong in objectstack-data).
 
 **Tags:** `cel`, `formula`, `predicate`, `condition`, `validation`, `visibility`, `seed-dynamic`
 

skills/README.md

@@ -37,7 +37,7 @@ apps too).
 | [AI](./objectstack-ai/SKILL.md) | `ai` | Design ObjectStack AI skills, tools, knowledge sources, conversations, model registry entries, and MCP integrations. |
 | [API](./objectstack-api/SKILL.md) | `api` | Design the server-side API surface that an ObjectStack runtime exposes — REST endpoints, auth providers, realtime channels, error envelopes, batch contracts. |
 | [i18n](./objectstack-i18n/SKILL.md) | `i18n` | Author ObjectStack translation bundles — object/field labels, view text, app navigation strings, automation messages — and configure locale fallback, coverage reporting, and the per-locale source layout. |
-| [Formula](./objectstack-formula/SKILL.md) | `expression` | Author CEL expressions used across ObjectStack — formula fields, field conditional rules (`visibleWhen`, `readonlyWhen`, `requiredWhen`), validation / sharing / visibility predicates, flow conditions, and dynamic seed values. |
+| [Formula](./objectstack-formula/SKILL.md) | `expression` | Author CEL expressions used across ObjectStack — formula fields, field conditional rules (`visibleWhen`, `readonlyWhen`, `requiredWhen`), validation / sharing / visibility predicates, flow conditions, and dynamic seed values. This is the companion skill that objectstack-data, -ui, -api and -automation each tell you to load alongside them. |
 | [PM Dispatch](./objectstack-pm-dispatch/SKILL.md) | `process` | Run a project-manager dispatch loop over a GitHub backlog: triage and queue ready issues, claim each one, dispatch it to a parallel developer agent that returns a structured JSON report, review the results against GitHub, and drive accepted pull requests to landing — escalating to the maintainer only what genuinely needs a human decision. Ships the developer-agent operating template the loop injects into every dispatch (no custom agent types required). |
 | [Upgrade](./objectstack-upgrade/SKILL.md) | `process` | Upgrade an ObjectStack metadata project across a protocol major — run the deterministic conversion chain, then work the semantic residue the chain cannot express (intent choices, custom code on retired APIs, stale prose) to a decision with the project's owner, and finish with a green `validate` plus a human-readable upgrade report. |