docs: extract cross-app patterns into skill v1.9 and AGENTS.md

[carlosvin]

Summary

Bumps the tanstack-fullstack-pattern skill to v1.9.0 by extracting generic, non-business-specific patterns observed across three downstream apps and adds the operational detail to AGENTS.md.

• Ports rules 26–29 back into the YAML source. They had drifted into the generated SKILL.md only, so the build artifact was ahead of the canonical source. This restores pnpm skills:build as the single path of truth.
• Adds 7 new rigid rules (30–36) — patterns that appeared in 2+ apps and are genuinely architectural.
• Extends AGENTS.md with inline amendments (Tier 4) and 5 new top-level sections (Tier 3) covering the larger code patterns.

New rigid rules in the skill (30–36)

#	Rule	Origin
30	Public runtime config bridge via getPublicEnv() + window.__ENV__ inline <script>	all 3 apps
31	Router UX defaults bundle (stale time, preload, scroll restoration, notFoundComponent)	all 3 apps
32	Project-local Link wrapper that preserves search by default	2 apps
33	Public-route allowlist in authMiddleware with synthetic anonymous AuthContext	2 apps
34	Sentry.setUser + feedbackIntegration({ autoInject: false }) header button	2 apps
35	Single docs/help.md backs /help, an AI tool, and the chat's suggested prompts	2 apps
36	getDistinctValues(field) method → server function → read-only AI tool for every enum-ish field	2 apps

New AGENTS.md sections (13–17)

• §13 Public Runtime Config — full template: server function, HTML-safe <script> injection, declare global for window.__ENV__.
• §14 Bulk Edit Pattern — URL-driven multi-select, category tabs, dirty tracking, bulkWrite batch mutations, "Apply all" row.
• §15 Override / Overlay Repository Pattern — source collection + sparse overrides + pure applyOverrides(), \$set/\$unset semantics, "Revert to source".
• §16 Sortable Tables (Controlled Mode) — uncontrolled vs controlled modes, pure sortRows(), null-sinking.
• §17 Autosave Forms with Concurrency Guards — hasMounted guard for spurious mount PATCH, isPatching ref for concurrent PATCH collision prevention.

Inline AGENTS.md amendments (Tier 4)

• §3 — hydration-safe useComputedColorScheme + useIsMounted
• §4 — satisfies over as, in-operator narrowing for unknown errors
• §5 — public-route allowlist body + pre-auth 308 redirect middleware pattern
• §7 — loaderDeps cache keying, functional-form navigate, child routes reading parent loader data
• §8 — virtual-field explanation registry, fluent system-prompt builder
• §10 — Zod round-trip test factories, dual Playwright webServer with in-process HTTP mock

Test plan

• pnpm skills:build regenerates SKILL.md, skills/dist/…, and skills/registry.json
• pnpm format — clean
• pnpm lint — Biome + tsc --noEmit + skills:check all green
• Spot-check the regenerated SKILL.md rendering in an agent session to confirm rules 30–36 surface when expected

Made with Cursor

[Copilot]

Pull request overview

Updates the tanstack-fullstack-pattern skill to v1.9.0 by bringing the YAML source back in sync with generated artifacts, adding new cross-app architectural rules, and expanding AGENTS.md with operational patterns that support those rules.

Changes:

• Bump tanstack-fullstack-pattern to v1.9.0 and port rules 26–29 back into the YAML source of truth.
• Add new rigid rules (30–36) and propagate them into the generated registry/dist/agent-skill outputs.
• Extend AGENTS.md with new sections (Public Runtime Config, Bulk Edit, Overrides overlay, Sortable tables, Autosave concurrency guards) and inline amendments.

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
skills/src/tanstack-fullstack-pattern.skill.yaml	Canonical skill source updated (v1.9.0, rules 26–36, refreshed capabilities/constraints/steps).
skills/registry.json	Generated registry updated to reflect new version and metadata.
skills/dist/tanstack-fullstack-pattern.md	Generated public markdown updated (v1.9.0 + new rules text).
AGENTS.md	Adds new operational guidance sections/amendments; renumbers “Validate Changes” section.
.agents/skills/tanstack-fullstack-pattern/SKILL.md	Generated agent-consumable skill updated with rules 26–36.

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