Align launch docs, API, and CLI reference with agentsfleet 0.17.0

[indykish]

Summary

• Rewrites published pages against a new documentation Constitution — one page type per page, required sections, concrete examples with expected output, plain language.
• Adds a pre-commit documentation linter (scripts/check-documentation.py + tests) enforcing metadata, structure, banned words, acronym expansion, and command-output pairing before commit.
• Syncs api-reference/error-codes.mdx (verified byte-for-byte against the Zig error-registry generator), the CLI command reference, connector guide, and quickstart against current source truth.
• Restores github-pr-reviewer as the flagship quickstart/install example — the upstream fleet-bundle repo it depends on is being fixed in a companion PR (Restore root SKILL.md and TRIGGER.md for fleet library onboarding github-pr-reviewer#5).
• Adds one changelog entry covering the confirmed behavioral fixes landing alongside this docs pass (stale CLI hints, clean --help output, widened GitHub Pull Request webhook acceptance, workspace delete JSON field rename).
• Net: 27 pages (was 28; billing/plans.mdx merged into billing/budgets.mdx with a redirect), -53.6% words, -54.3% bytes.

Companion product-repo PR (not yet opened) lands the matching source-truth fixes this docs pass depends on.

Test plan

• make test — 22 documentation-rule tests pass
• make lint — doc rules, OpenAPI drift, Mintlify validate, broken-links, markdown-link-check all pass
• gitleaks protect --staged — no leaks found
• api-reference/error-codes.mdx diffed byte-for-byte against zig build gen-error-codes output — identical

Greptile Summary

This PR aligns the documentation with agentsfleet 0.17.0 and adds automated documentation checks. The main changes are:

• Rewrites the launch, API, CLI, fleet, billing, memory, and workspace pages.
• Adds a documentation linter, tests, and a pre-commit hook.
• Updates the OpenAPI drift check and CLI exit-code guidance.
• Refreshes error codes, navigation, examples, and the changelog.

Confidence Score: 5/5

This looks safe to merge.

• Deleted API documentation paths now trigger the OpenAPI drift check.
• The installation guide no longer assigns every doctor failure to exit code 1.
• No blocking issue remains in the reviewed fixes.

Important Files Changed

Filename	Overview
.githooks/pre-commit	Adds pre-commit documentation checks and includes deleted files when deciding whether to run the OpenAPI drift check.
Makefile	Adds hook installation and documentation tests, and makes OpenAPI drift failures blocking.
scripts/check-documentation.py	Adds automated checks for documentation metadata, structure, language, acronyms, and command output.
scripts/test-documentation.py	Adds tests for the documentation rules and pre-commit integration.
cli/install.mdx	Updates installation guidance and points doctor failures to the detailed exit-code reference.
cli/agentsfleet.mdx	Refreshes the command reference, including the differentiated CLI exit-code contract.
api-reference/error-codes.mdx	Replaces the error-code reference with the generated 0.17.0 format and updated response fields.

_{Reviews (3): Last reviewed commit: "fix: apply the same deletion-filter fix ..." | Re-trigger Greptile}