Preserve guidance meaning in CLI output

[nahiyankhan]

Category: fix
User Impact: Agents receive the selection rules and review guidance that authors wrote.

Problem: Gather truncated kind descriptions and omitted them from Markdown. Markdown review listed baseline references without the prose needed to assess a change.

Solution: Preserve full parsed kind descriptions, reuse the selection instructions in Markdown, and include referenced review prose with duplicate-section handling.

Compatibility: JSON kind purposes retain multiple paragraphs. Markdown includes more authored guidance; this PR does not add load diagnostics or change completeness types.

Scope: One of five independent PRs split from the original #291. This branch targets main and contains only this concern, its tests, and its documentation.

Related: Enforce resolved material access boundaries, Report incomplete guidance loading, Add read-only installed skill checks, Fix and validate rendered guidance examples.

Validation:

• pnpm run quality:all: passed on this standalone branch, including build, package/release checks, tests (232 passed), workspace builds, and package validations.
• Pre-commit checks and git diff origin/main...HEAD --check: passed.
• Fresh dependency installation hit registry checksum errors. Validation used an isolated copy of the existing checkout's dependencies; the lockfile is unchanged.

Changeset: Existing patch changeset retained.

ghost Review: Review packet assembled against apps/docs/.ghost. This package does not bind the changed CLI/test/docs files, so the packet is coverage context, not a passing brand review. Used the current ghost review --package apps/docs/.ghost --base origin/main --format json and inspected ghost manifest; the older ghost check, --include-memory, and dump:cli-help workflows are unavailable in this checkout.

File changes (11 files)

File	Purpose
.changeset/preserve-packet-meaning.md	Record the guidance delivery fixes.
README.md	Correct the command for task-free catalog inspection.
packages/ghost/README.md	Correct the command for task-free catalog inspection.
packages/ghost/src/commands/gather-command.ts	Render shared selection instructions and kind descriptions.
packages/ghost/src/embed/gather.ts	Preserve full parsed kind descriptions.
packages/ghost/src/review/review-packet.ts	Include baseline prose and avoid repeating previously shown guidance.
packages/ghost/src/skill-bundle/SKILL.md	Explain kind selection rules and review baselines.
packages/ghost/src/skill-bundle/references/ground.md	Tell the host to honor kind selection rules.
packages/ghost/src/skill-bundle/references/schema.md	Document full kind purposes and baseline delivery.
packages/ghost/test/cli.test.ts	Update assertions for the intended Markdown content.
packages/ghost/test/semantic-delivery.test.ts	Cover complete purposes, baseline sections, deduplication, and missing-heading fallback.

Screenshots/Demos: N/A: no visual surface changes.