FE-1507: Move the repertoire into core behind a guarded prompts subpath

[lunelson]

🌟 What is the purpose of this PR?

ADR-0008 (accepted 2026-08-26) moves the harness's default teaching out of its own workspace and into core behind a guarded @hashintel/brunch-agent/prompts subpath that bindings may import and plugins may not. This branch is that mechanical move; it changes no plugin key and no repertoire text.

Draft: opened so the stack is visible end to end. The description is completed when the branch is tied off.

🔗 Related links

• FE-1507 (internal; owning issue)

🚫 Blocked by

• Stacks on ln/fe-1431-plugins; lands after it.

🔍 What does this change?

Removes packages/repertoire and its dependency edges; adds the ./prompts core export; the architecture suite requires the export and rejects a plugin import of it.

Pre-Merge Checklist 🚀

🚢 Has this modified a publishable library?

This PR:

• does not modify any publishable blocks or libraries, or modifications do not need publishing

📜 Does this require a change to the docs?

The changes in this PR:

• are internal and do not require a docs change

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Project	Deployment	Actions	Updated (UTC)
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[lunelson]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• FE-1507: Move the repertoire into core behind a guarded prompts subpath #9349 : 2 dependent PRs (#9355 , #9381 ) 👈 (View in Graphite)
• FE-1431: Build the plugin authoring surface (cycle two) #9348
• FE-1505: Time each interviewer turn by purpose #9347
• FE-1506: Show captures and completion while a panel elicitation runs #9346
• FE-1504: Run the process-model elicitor from the Petrinaut panel on one owned document #9345
• FE-1431: Build the plugin authoring surface #9337
• FE-1406: Audit the harness-teaching lineage and propose the fixed-key plugin contract (ADR-0007) #9327
• FE-1497: Build the controller read path and the SDCPN plugin package #9325
• FE-1404: Run condition 3 as the walking skeleton #9322
• FE-1403: Assemble and test the CPS interview guidance #9321
• FE-1402: Define and rehearse the elicitation completion contract #9320
• FE-1407: Catalogue elicitor failures that published measures miss #9319
• FE-1480: Project and realize a CPS model as a Petrinaut SDCPN #9313
• FE-1495: Prevent Brunch TypeScript contracts from drifting #9312
• FE-1494: Keep Brunch strategy and control records coherent #9311
• FE-1437: Move brunch-agent into hashintel/hash with its history #9274
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[cursor]

PR Summary

Medium Risk
This changes package topology and every binding/evaluation import path for default prompt data, though guards and tests aim to keep plugins from importing harness teaching.

Overview
Implements ADR-0008 by deleting the @hashintel/brunch-agent-repertoire workspace and folding default harness teaching into @hashintel/brunch-agent as a new ./prompts subpath (prompts.ts loads validated repertoire.yaml). Bindings and the baseline evaluation now import repertoire from @hashintel/brunch-agent/prompts instead of the removed package.

Enforcement shifts with the move: architecture tests require the ./prompts export, assert no packages/repertoire, allow only bindings to import the subpath, and expect plugin oxlint to ban @hashintel/brunch-agent/prompts; the core root export must not re-export prompts. CI prune drops repertoire-specific extra paths/tests.

Docs (ADR-0008, topology, elicitation-kernel spec, steering) and plugin comments are updated to describe core-owned prompt data; repertoire content and plugin keys are unchanged.

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[lunelson]

Superseded by merged PR #9463, which consolidated this branch and the rest of the FE-1406–FE-1524 stack into one reviewed merge. Closing this PR as superseded; its discussion remains review history.