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feat(core): discover instructions on directory reads

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This commit is contained in:
Dax Raad 2026-07-01 21:11:22 -04:00
commit bea6e1499d
2 changed files with 73 additions and 10 deletions
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27
packages/core/src/tool/read.ts
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@ -85,22 +85,29 @@ const layer = Layer.effectDiscard(
agent: context.agent,
source,
})
if (type === "directory")
return yield* reader.list(absolute, { offset: input.offset, limit: input.limit })
const content = yield* reader.read(absolute, resource, {
offset: input.offset,
limit: input.limit,
})
// After a successful file content read (not directory listings), discover
// nearby AGENTS.md walking up to the Location root exclusive and inject them
// as durable synthetic instructions. Discovery failures never fail the read.
const content =
type === "directory"
? yield* reader.list(absolute, { offset: input.offset, limit: input.limit })
: yield* reader.read(absolute, resource, {
offset: input.offset,
limit: input.limit,
})
// After a successful read, discover nearby AGENTS.md walking up to the Location
// root exclusive and inject them as durable synthetic instructions. For a
// directory listing the walk starts at the directory itself (so its own AGENTS.md
// is discovered); for a file it starts at the file's dirname. External reads are
// skipped, and discovery failures never fail the read.
yield* Effect.gen(function* () {
if (target.externalDirectory !== undefined) return
const resolved = FSUtil.resolve(target.canonical)
const root = FSUtil.resolve(location.directory)
// up() searches its stop directory, so the Location-root AGENTS.md (already
// supplied by the core/instructions baseline) is dropped by the dirname filter.
const discovered = yield* fs.up({ targets: [FILENAME], start: dirname(resolved), stop: root })
const discovered = yield* fs.up({
targets: [FILENAME],
start: type === "directory" ? resolved : dirname(resolved),
stop: root,
})
const candidates = discovered.map(FSUtil.resolve).filter((file) => dirname(file) !== root)
if (candidates.length === 0) return
yield* sessionInstructions.load({ sessionID: context.sessionID, paths: candidates })