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.

This change also introduces the mergify-tui crate. The
colored-tree rendering primitives are written there from the
start (Theme + relative-time formatter + box-drawing
characters) rather than inlined in status.rs and extracted
later — they're general-purpose and will be needed by every
command with structured human output (queue show,
freeze list, future ports).

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 (● ◑ ◌ ✓ ✗ ◎ ⏳ ↻ ⏰ ❄), tree
   characters (├── └── │ ), and relative times
   (5m ago / ~1h) match the Python implementation.

The mergify-tui crate has three modules:

• theme: Theme struct with TTY/NO_COLOR-aware
  enable/disable. Pre-built named styles (bold, dim,
  cyan/green/red/yellow/magenta, warn)
  plus a fg(AnsiColor) helper for domain-specific palettes.
  Theme::detect is the production constructor;
  Theme::new(enabled) is for tests.
• time: relative_time(iso, now, future) — coarse
  Ns/Nm/Nh/Nd formatter mirroring the Python
  CLI's _relative_time. Empty string on parse failure so a
  malformed timestamp doesn't abort the surrounding render.
• tree: Unicode box-drawing constants (BRANCH,
  LAST_BRANCH, CONTINUATION, LAST_CONTINUATION) plus
  branch_chars(is_last) to pick both prefixes for a row in
  one call.

Tests:

• mergify-tui: 11 tests (theme on/off, relative-time units +
  parse failure + future prefix, tree-character pairing).
• build_path covers no-branch, branch, and URL-encoding of a
  branch name with slashes + spaces.
• 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.

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

Depends-On: #1409

[jd]

This pull request is part of a Mergify stack:

#	Pull Request	Link
1	test(ci): add live smoke test for ci queue-info	#1406
2	feat(rust): port ci queue-info to native Rust	#1407
3	test(queue): add live smoke test for queue status	#1409
4	feat(rust): port queue status to native Rust	#1359	👈
5	test: derive native queue commands from the binary, not a hardcoded list	#1366
6	test(queue): add live smoke test for queue show	#1408
7	feat(rust): port queue show to native Rust	#1399
8	test(skill): port the skill-references test to Rust	#1414

[mergify]

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• depends-on=Mergifyio/mergify-cli#1406 [⛓️ test(ci): add live smoke test for ci queue-info #1406 [stack]]
• depends-on=Mergifyio/mergify-cli#1407 [⛓️ feat(rust): port ci queue-info to native Rust #1407 [stack]]
• depends-on=Mergifyio/mergify-cli#1409 [⛓️ test(queue): add live smoke test for queue status #1409 [stack]]

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• depends-on=Mergifyio/mergify-cli#1407 [⛓️ feat(rust): port ci queue-info to native Rust #1407 [stack]]
• depends-on=Mergifyio/mergify-cli#1409 [⛓️ test(queue): add live smoke test for queue status #1409 [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
8	content	d75104b → e7408de		2026-05-07 13:40 UTC
9	rebase	e7408de → e9b1c70		2026-05-07 15:17 UTC
10	content	e9b1c70 → 439025b		2026-05-07 18:21 UTC
11	rebase	439025b → 5f0f240		2026-05-11 07:13 UTC
12	content	5f0f240 → 2958801		2026-05-11 11:46 UTC
13	rebase	2958801 → 5c930de		2026-05-11 12:06 UTC
14	rebase	5c930de → 6080692		2026-05-11 12:19 UTC
15	rebase	6080692 → 76f551a		2026-05-11 14:08 UTC
16	rebase	76f551a → 1371b4e		2026-05-11 14:59 UTC
17	rebase	1371b4e → cefce9c		2026-05-11 15:05 UTC
18	rebase	cefce9c → e7ff17e		2026-05-11 20:59 UTC
19	content	e7ff17e → b6f9bf8 (raw)		2026-05-12 07:44 UTC
20	rebase	b6f9bf8 → 5eb39a5 (rebase only)		2026-05-13 08:25 UTC

[Copilot]

Pull request overview

Ports mergify queue status from the Python shim to the native Rust binary, removing the Python implementation to keep a single source of truth and introducing a small shared “TUI primitives” crate for consistent human-readable rendering across future ports.

Changes:

• Add a native Rust implementation of queue status (human output + --json passthrough) and wire it into the Rust CLI dispatcher.
• Introduce the new mergify-tui crate (theme/color handling, relative-time formatting, tree characters) and use it from mergify-queue.
• Remove the Python queue status command + its API/types and delete the Python CLI tests that were specific to that implementation.

Reviewed changes

Copilot reviewed 13 out of 14 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
mergify_cli/tests/queue/test_skill.py	Marks status as Rust-native for skill validation.
mergify_cli/tests/queue/test_cli.py	Removes Python queue status tests; keeps _relative_time tests.
mergify_cli/queue/cli.py	Deletes Python queue status implementation and helper renderers.
mergify_cli/queue/api.py	Removes Python get_queue_status + related TypedDicts.
crates/mergify-tui/src/lib.rs	Exposes shared TUI primitives for ported commands.
crates/mergify-tui/src/theme.rs	Adds Theme with TTY/NO_COLOR detection + named styles.
crates/mergify-tui/src/time.rs	Adds coarse relative_time formatter.
crates/mergify-tui/src/tree.rs	Adds box-drawing constants and branch_chars().
crates/mergify-tui/Cargo.toml	Defines the new mergify-tui crate/deps.
crates/mergify-queue/src/status.rs	Implements native queue status + unit/e2e tests.
crates/mergify-queue/src/lib.rs	Exports the new status module and updates module docs.
crates/mergify-queue/Cargo.toml	Adds deps required by status and mergify-tui.
crates/mergify-cli/src/main.rs	Adds native dispatch + clap wiring for queue status.
Cargo.lock	Locks new crate dependencies (chrono, iana-time-zone, etc.).

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