feat(rust): port queue status to native Rust

[jd]

The Rust binary now serves mergify queue status natively. The
Python implementation (mergify_cli/queue/cli.py:status plus the
batch/scope/topology helpers it depended on) is removed in the
same PR — the port-and-delete rule we adopted in #1322 keeps a
single live copy of every command.

mergify queue status [-r REPO] [-t TOKEN] [-u URL] [-b BRANCH] [--json]:

1. Resolves repository / token / API URL via the shared
   mergify_queue::auth resolver introduced in feat(rust): port queue pause and unpause to native Rust #1352.
2. Fetches GET /v1/repos/<repo>/merge-queue/status, optionally
   with ?branch=<branch> (URL-encoded via
   url::form_urlencoded::byte_serialize).
3. With --json: pretty-prints the raw response. The schema is
   Mergify's API contract, not this CLI's, so we deserialize into
   serde_json::Value and emit verbatim — unknown fields and
   future schema additions survive the round trip.
4. Without --json: deserializes into a typed StatusView
   that uses #[serde(default)] Option<…> for every field the
   Mergify API has historically treated as optional/nullable
   (matches the port checklist from docs(port): add port review checklist for HTTP/test/UX parity pitfalls #1357), then renders a
   header, an optional pause indicator, the batch tree (grouped
   by scope when there is more than one), and the waiting-PR
   list. Status icons (● ◑ ◌ ✓ ✗ ◎ ⏳ ↻ ⏰ ❄) and relative
   times (5m ago / ~1h) match the Python implementation.

Python used Rich's Tree for batches. The Rust port emits
flat indented text instead — same data, simpler rendering. Both
are line-oriented and round-trip cleanly through pipes; the
fancy box-drawing was visual sugar that didn't survive piping
anyway.

• build_path covers no-branch, branch, and URL-encoding of a
  branch name with slashes + spaces (e.g. feature/foo bar
  becomes feature%2Ffoo+bar in the query).

• relative_time covers seconds / minutes / hours / days,
  future prefix, and graceful empty-string return on a malformed
  timestamp (matches Python's "degrade rather than fail").

• topological_sort covers parents-before-children ordering
  and tolerance of parent_ids that reference missing batches.

• group_by_scope covers the [] → "default" fallback
  and multi-scope batches appearing under each scope they claim.

• status_icon covers known + unknown codes.

• End-to-end wiremock tests: empty queue, paused queue, batches +
  waiting PRs, multi-scope grouping, ?branch=… query
  threading, JSON-passthrough preserving an extra_field,
  and tolerance of a response that omits all optional fields.

• crates/mergify-queue/Cargo.toml: adds chrono (relative
  time math), indexmap (scope groups in insertion order),
  promotes serde_json from dev to runtime (used for the
  serde_json::Value passthrough).

• crates/mergify-cli/src/main.rs: registers the status
  subcommand under QueueSubcommand, threads the
  --branch/--json flags, dispatches to
  mergify_queue::status::run. Adds status to
  looks_native.

• mergify_cli/queue/api.py: removes QueueStatusResponse,
  QueueBatch, QueuePause, QueueChecksSummary,
  QueueBatchStatus, QueuePullRequest,
  QueuePullRequestAuthor, and get_queue_status — all
  now Rust-native. QueuePullResponse and friends stay for
  the still-shimmed queue show (next phase).

• mergify_cli/queue/cli.py: removes the @queue.command status block and the helpers it owned (STATUS_STYLES,
  _status_text, _batch_label, _pr_label,
  _topological_sort, _group_batches_by_scope,
  _print_batches, _print_waiting_prs).
  _relative_time stays — show still uses it.

• mergify_cli/tests/queue/test_cli.py: deletes
  TestStatusCommand, TestTopologicalSort, and the
  _invoke_status helper. TestRelativeTime stays.

Workspace: 138 Rust tests green, 590 Python tests green.

Co-Authored-By: Claude Opus 4.7 (1M context) noreply@anthropic.com

Depends-On: #1353

[jd]

This pull request is part of a Mergify stack:

#	Pull Request	Link
1	feat(rust): port queue pause and unpause to native Rust	#1352
2	feat(rust): port ci git-refs and ci queue-info to native Rust	#1353
3	feat(rust): port queue status to native Rust	#1359	👈
4	test: derive native queue commands from the binary, not a hardcoded list	#1366
5	feat(rust): extract reusable terminal-UI primitives into mergify-tui	#1379
6	fix(cli): surface clap's --help instead of erroring on native subcommands	#1380

[mergify]

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• depends-on=Mergifyio/mergify-cli#1353 [⛓️ feat(rust): port ci git-refs and ci queue-info to native Rust #1353 [stack]]

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[jd]

Revision history

#	Type	Changes	Reason	Date
1	initial	ef75ea5		2026-05-05 13:13 UTC
2	rebase	ef75ea5 → d733d15		2026-05-05 13:13 UTC
3	content	d733d15 → aa25245		2026-05-05 13:22 UTC
4	content	aa25245 → 53d4832		2026-05-05 15:18 UTC
5	content	53d4832 → e7ad85a		2026-05-05 19:59 UTC
6	rebase	e7ad85a → 4be1b66		2026-05-06 10:57 UTC
7	content	4be1b66 → d75104b		2026-05-06 13:00 UTC