instant: build fix-card Copy AI prompt dynamically from title + link

[aurorascharff]

What

Every fix card (dev overlay + docs pages) used to ship a multi-paragraph prompt string copied verbatim to the agent. This PR builds the prompt at click time from title + link so 71 prompt strings (36 docs MDX + 35 runtime) are deleted from source.

The template:

Before applying this fix:

1. Read the actual Next.js error in the dev overlay (or browser/terminal console) to identify the failing file, line, and component. Match the fix to that component — don't patch unrelated files.

2. Read the full context for this rule at <rule-url>, then read the specific fix section at <fix-url>. The fix section names the exact code shape, every constraint, and the imports allowed. Follow it exactly — don't improvise.

Apply the "<title>" fix.

Why

Old prompts repeated what the docs already say and never told the agent to read the dev overlay first. The new template always points at the docs (rule + fix anchor) and grounds the fix in the real error.

Changes

• FixCard type: prompt?: string → copyable?: boolean
• CopyPromptButton: takes title + link, builds the prompt
• 14 error MDX pages: every prompt={...} removed (36 strings)
• instant-guidance-data.ts: every prompt: '...' → copyable: true (35 strings)
• Skill (.agents/skills/insight-error-page/SKILL.md): updated

Pairs with

vercel/front#73087 — same template in the docs-site <FixOption>.

[github-actions]

Failing test suites

Commit: 0fb10a0 | About building and testing Next.js

pnpm test-start test/production/app-dir/metadata-static-route-cache/metadata-static-route-cache.test.ts (job)

• app dir - metadata static routes cache > should generate different content after replace the static metadata file (DD)

Expand output

● app dir - metadata static routes cache › should generate different content after replace the static metadata file

next already started

  65 |   ) {
  66 |     if (this.childProcess) {
> 67 |       throw new Error('next already started')
     |             ^
  68 |     }
  69 |
  70 |     this._cliOutput = ''

  at NextStartInstance.start (lib/next-modes/next-start.ts:67:13)
  at Object.start (production/app-dir/metadata-static-route-cache/metadata-static-route-cache.test.ts:17:16)

[github-actions]

Stats cancelled

Commit: 0fb10a0
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[Copilot]

Pull request overview

This PR removes hard-coded multi-paragraph “Copy AI prompt” strings from fix cards and replaces them with a single standardized prompt template that is generated from the fix card title + docs link. This keeps the agent workflow consistently anchored to the canonical docs page while also explicitly instructing the agent to first inspect the real dev overlay error context.

Changes:

• Replaced FixCard.prompt?: string with FixCard.copyable?: boolean, and updated the dev overlay to generate the copy prompt from title + link.
• Updated instant-guidance-data.ts to mark relevant cards as copyable: true (removing the duplicated prompt strings).
• Removed prompt={...} props from the affected errors/*.mdx pages and updated the authoring skill doc accordingly.

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/next/src/next-devtools/dev-overlay/components/instant/instant-guidance.tsx	Generates the copied AI prompt from title + link and gates the copy button via copyable.
packages/next/src/next-devtools/dev-overlay/components/instant/instant-guidance-data.ts	Updates the FixCard type and replaces embedded prompt strings with copyable: true.
errors/instant-unrendered-segment.mdx	Removes prompt props from <FixOption> entries.
errors/blocking-prerender-viewport-runtime.mdx	Removes prompt props from <FixOption> entries.
errors/blocking-prerender-viewport-dynamic.mdx	Removes prompt props from <FixOption> entries.
errors/blocking-prerender-runtime.mdx	Removes prompt props from <FixOption> entries.
errors/blocking-prerender-random.mdx	Removes prompt props from <FixOption> entries.
errors/blocking-prerender-random-client.mdx	Removes prompt props from <FixOption> entries.
errors/blocking-prerender-metadata-runtime.mdx	Removes prompt props from <FixOption> entries.
errors/blocking-prerender-metadata-dynamic.mdx	Removes prompt props from <FixOption> entries (and collapses one <FixOption> tag to a single line).
errors/blocking-prerender-dynamic.mdx	Removes prompt props from <FixOption> entries.
errors/blocking-prerender-current-time.mdx	Removes prompt props from <FixOption> entries.
errors/blocking-prerender-current-time-client.mdx	Removes prompt props from <FixOption> entries.
errors/blocking-prerender-crypto.mdx	Removes prompt props from <FixOption> entries.
errors/blocking-prerender-crypto-client.mdx	Removes prompt props from <FixOption> entries.
errors/blocking-prerender-client-hook.mdx	Removes prompt props from <FixOption> entries.
.agents/skills/insight-error-page/SKILL.md	Updates authoring guidance to reflect that prompts are generated dynamically and the page is the source of truth.

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