Simplify fingerprint package shape

[nahiyankhan]

♻️ Recreated from #163, which GitHub auto-closed during a repository history rewrite (dogfood removal). Same branch, same commit, same work — no changes lost.

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Category: improvement
User Impact: Ghost users get a smaller, clearer fingerprint package with raw repo signals separated from curated inventory and deterministic checks flattened to fingerprint/checks.yml.
Problem: The canonical package shape still carried optional memory/cache support and a confusing ghost inventory command, which blurred durable fingerprint layers with agent reconnaissance. Checks also lived under fingerprint/enforcement/checks.yml, adding a folder level for behavior that is validation support rather than a separate package surface.
Solution: Remove memory/cache package support, rename ghost inventory to ghost signals, and make checks a flat optional package file at fingerprint/checks.yml. Update docs, the skill bundle, dogfood fingerprints, generated CLI metadata, and tests around the simplified shape.

Validation:

• pnpm build: passed
• pnpm test: passed, 36 files / 387 tests
• pnpm check: passed
• pnpm dump:cli-help --check: passed
• pre-commit hook: passed pnpm check and format checks
• pre-push hook: passed pnpm build, pnpm test, and pnpm check

Changeset: added major changeset in .changeset/quiet-signals-major.md because this removes/renames public CLI behavior and package fields, and moves checks to fingerprint/checks.yml.

Ghost Review:

• node packages/ghost/dist/bin.js check --base origin/main: passed with no active deterministic check failures
• node packages/ghost/dist/bin.js review --base origin/main: ran successfully; advisory packet emitted, diff was truncated at the default --max-diff-bytes budget

File changes

.changeset/quiet-signals-major.md
Adds the major release note for the breaking package-shape and CLI changes.

.ghost/fingerprint/checks.yml
Moves the dogfood checks file from fingerprint/enforcement/checks.yml to the flat package path.

.ghost/fingerprint/composition.yml
Updates dogfood composition guidance around flat checks and removed cache support.

.ghost/fingerprint/inventory.yml
Removes generated-cache source references and updates refs to the new signals framing.

.ghost/fingerprint/memory/intent.md
Deletes removed optional memory support from the dogfood package.

.ghost/fingerprint/prose.yml
Updates dogfood prose to describe raw signals, flat checks, and removed memory/cache support.

.ghost/fingerprint/sources/cache/.gitkeep
Deletes removed generated-cache package convention.

CLAUDE.md
Updates project docs for the new package shape and ghost signals command.

README.md
Updates public package shape, authoring flow, command table, and review examples.

apps/docs/src/app/page.tsx
Updates docs homepage copy to remove cache/memory and show flat checks.

apps/docs/src/content/docs/cli-reference.mdx
Updates CLI docs for signals, removed flags, and flat checks path.

apps/docs/src/content/docs/fingerprint-authoring.mdx
Refreshes authoring guidance around raw signals and simplified package layers.

apps/docs/src/content/docs/getting-started.mdx
Updates getting-started package tree and support-material explanation.

apps/docs/src/generated/cli-manifest.json
Regenerates CLI help metadata after command/flag/path changes.

docs/fingerprint-format.md
Documents the simplified fingerprint package format and flat checks.yml.

docs/generation-loop.md
Updates generation/review commands and removes generated-cache/memory references.

docs/host-adapters.md
Updates adapter guidance for raw signals and flat checks.

docs/ideas/fingerprint-first-architecture.md
Aligns architecture notes with signals and checks.yml.

docs/language-fingerprints.md
Updates language-check examples to use fingerprint/checks.yml.

packages/ghost-core/src/fingerprint-package.ts
Removes canonical memory/cache/enforcement path constants from the private package path model.

packages/ghost-core/src/index.ts
Removes now-deleted memory exports and enforcement path exports.

packages/ghost-core/src/memory/index.ts
Deletes removed memory package support.

packages/ghost-core/src/memory/lint.ts
Deletes removed memory decision lint support.

packages/ghost-core/src/memory/schema.ts
Deletes removed memory decision schema support.

packages/ghost-core/src/memory/types.ts
Deletes removed memory decision types.

packages/ghost-core/test/memory.test.ts
Deletes tests for removed memory decision package support.

packages/ghost-ui/.ghost/fingerprint/checks.yml
Moves the Ghost UI dogfood checks file to the flat path.

packages/ghost-ui/.ghost/fingerprint/inventory.yml
Removes generated-cache source references from Ghost UI dogfood inventory.

packages/ghost-ui/.ghost/fingerprint/sources/cache/.gitkeep
Deletes removed generated-cache placeholder.

packages/ghost/README.md
Updates package README for signals, flat checks, and removed memory/cache support.

packages/ghost/src/cli.ts
Removes review --include-memory plumbing.

packages/ghost/src/command-discovery.ts
Renames command discovery metadata from inventory to signals and removes cache wording.

packages/ghost/src/context/entrypoint-markdown.ts
Removes the generated cache section from Relay/context markdown.

packages/ghost/src/context/entrypoint.ts
Updates suggested reads and selected context paths to flat fingerprint/checks.yml.

packages/ghost/src/context/graph.ts
Updates check source-file metadata to fingerprint/checks.yml.

packages/ghost/src/context/package-context.ts
Removes cache/intent loading from package context and reads flat checks.

packages/ghost/src/context/package-review-command.ts
Updates emitted review command copy for flat checks and no memory/cache support.

packages/ghost/src/fingerprint-commands.ts
Removes init --with-intent, adds signals, resolves flat checks, and updates scan/init output.

packages/ghost/src/fingerprint.ts
Removes removed constants from public fingerprint exports.

packages/ghost/src/ghost-core/fingerprint-package.ts
Updates bundled core package path constants for the simplified shape.

packages/ghost/src/ghost-core/fingerprint/schema.ts
Removes cache as an inventory source kind.

packages/ghost/src/ghost-core/fingerprint/types.ts
Removes cache from inventory source kind typing.

packages/ghost/src/ghost-core/index.ts
Removes memory/enforcement exports from bundled core.

packages/ghost/src/ghost-core/memory/index.ts
Deletes removed bundled memory package support.

packages/ghost/src/ghost-core/memory/lint.ts
Deletes removed bundled memory lint support.

packages/ghost/src/ghost-core/memory/schema.ts
Deletes removed bundled memory schema support.

packages/ghost/src/ghost-core/memory/types.ts
Deletes removed bundled memory types.

packages/ghost/src/review-packet.ts
Removes packet intent/accepted_decisions handling and memory markdown sections.

packages/ghost/src/scan-stack-command.ts
Removes stack output fields for removed memory decisions.

packages/ghost/src/scan/constants.ts
Removes memory/cache/enforcement constants from scan constants.

packages/ghost/src/scan/fingerprint-package-layers.ts
Removes template support for optional memory intent.

packages/ghost/src/scan/fingerprint-package.ts
Simplifies package path resolution, initialization, linting, and flat checks resolution.

packages/ghost/src/scan/fingerprint-stack.ts
Removes stack memory/cache/decision merge support and updates check merge diagnostics.

packages/ghost/src/scan/index.ts
Exports signals instead of inventory and drops removed constants.

packages/ghost/src/scan/inventory.ts
Renames the raw repo-signal API export to signals.

packages/ghost/src/scan/scan-status.ts
Removes scan intent and cache status fields.

packages/ghost/src/scan/verify-package.ts
Updates check verification diagnostics to fingerprint/checks.yml.

packages/ghost/src/skill-bundle/SKILL.md
Updates skill instructions for the simplified package shape and signals.

packages/ghost/src/skill-bundle/references/authoring-scenarios.md
Updates authoring scenarios for raw signals and removed memory/cache support.

packages/ghost/src/skill-bundle/references/brief.md
Removes cache/memory guidance from briefing workflow.

packages/ghost/src/skill-bundle/references/capture.md
Updates capture workflow for signals and flat checks.

packages/ghost/src/skill-bundle/references/critique.md
Updates critique guidance for missing-fingerprint and no memory fields.

packages/ghost/src/skill-bundle/references/patterns.md
Updates pattern guidance for flat checks and raw signals.

packages/ghost/src/skill-bundle/references/recall.md
Removes memory accepted-decision context from recall workflow.

packages/ghost/src/skill-bundle/references/review.md
Updates review workflow for flat checks and removed memory packet fields.

packages/ghost/src/skill-bundle/references/schema.md
Updates package schema reference for flat checks.yml.

packages/ghost/src/skill-bundle/references/verify.md
Updates verification guidance after removed optional rationale files.

packages/ghost/src/skill-bundle/references/voice.md
Updates language check example path to fingerprint/checks.yml.

packages/ghost/test/cli.test.ts
Updates CLI coverage for signals, removed flags, flat checks, scan fields, and review packet fields.

packages/ghost/test/context-entrypoint.test.ts
Updates context expectations after generated-cache removal.

packages/ghost/test/fingerprint-package.test.ts
Updates package lint tests for removed cache source kind and simplified sources.

packages/ghost/test/fingerprint-stack.test.ts
Updates stack tests for removed memory decisions and flat checks.

packages/ghost/test/fixtures/context-sandboxes/harness.ts
Updates sandbox package fixture generation to flat checks and no cache helper.

packages/ghost/test/public-exports.test.ts
Updates public export expectations from inventory to signals.

packages/ghost/test/relay.test.ts
Updates Relay fixture usage after cache removal.

packages/ghost/test/scan-status.test.ts
Updates scan readiness expectations after removing cache/intent fields.

scripts/pack-release-tarball.mjs
Allows release tarball packaging to resolve runtime dependencies from hoisted root node_modules as well as package-local links.

Screenshots/Demos: N/A