test(ci): add live smoke test for ci scopes select-all path

[jd]

Pin the contract before porting ci scopes to Rust. The new test
exercises the "no base provided" branch — pass --head HEAD
without --base and the command must list every configured scope
as touched. This is the one execution path through ci scopes
that doesn't shell out to git diff, so the test stays hermetic
inside the tmp dir the cli fixture runs in (no git init, no
remote fetch, no Mergify API).

The Python implementation passes today. The follow-up port lands
on top and the same smoke test exercises the Rust binary,
catching any wire-format or exit-code drift between the two
implementations.

Co-Authored-By: Claude Opus 4.7 noreply@anthropic.com

Depends-On: #1447

[jd]

This pull request is part of a Mergify stack:

#	Pull Request	Link
1	fix(cli): accept --debug on the Rust binary and actually toggle it in Python	#1464
2	refactor(rust): share test scaffolding via mergify-test-support crate	#1439
3	refactor(core): introduce CommandContext for the queue+freeze prelude	#1441
4	refactor(ci): consolidate the CI-env scrubber into a shared testing module	#1442
5	refactor: drop stale Phase X.Y doc markers and one inline color branch	#1443
6	refactor(tui): share StyledGlyph across queue show/status renderers	#1444
7	refactor(queue): drop indexmap, group_by_scope returns a Vec<(K, V)>	#1445
8	refactor(ci): swap uuid for getrandom in the GHA heredoc delimiter	#1446
9	refactor(config): standardize the workspace on serde_yaml_ng for YAML parsing	#1447
10	test(ci): add live smoke test for ci scopes select-all path	#1460	👈
11	feat(rust): port ci scopes to native Rust	#1461
12	feat(ci): parse JUnit XML reports in native Rust	#1465
13	feat(ci): encode JUnit cases as OTLP and upload to Mergify CI Insights	#1466
14	feat(ci): promote ci junit-process from shim to native Rust	#1467
15	feat(ci): promote ci junit-upload from shim to native as a deprecated alias	#1468
16	fix(ci): prefer GitHub Actions PR-event head SHA over GITHUB_SHA	#1469

[mergify]

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🔴 ⛓️ Depends-On Requirements

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• depends-on=Mergifyio/mergify-cli#1439 [⛓️ refactor(rust): share test scaffolding via mergify-test-support crate #1439 [stack]]
• depends-on=Mergifyio/mergify-cli#1441 [⛓️ refactor(core): introduce CommandContext for the queue+freeze prelude #1441 [stack]]
• depends-on=Mergifyio/mergify-cli#1442 [⛓️ refactor(ci): consolidate the CI-env scrubber into a shared testing module #1442 [stack]]
• depends-on=Mergifyio/mergify-cli#1443 [⛓️ refactor: drop stale Phase X.Y doc markers and one inline color branch #1443 [stack]]
• depends-on=Mergifyio/mergify-cli#1444 [⛓️ refactor(tui): share StyledGlyph across queue show/status renderers #1444 [stack]]
• depends-on=Mergifyio/mergify-cli#1445 [⛓️ refactor(queue): drop indexmap, group_by_scope returns a Vec<(K, V)> #1445 [stack]]
• depends-on=Mergifyio/mergify-cli#1446 [⛓️ refactor(ci): swap uuid for getrandom in the GHA heredoc delimiter #1446 [stack]]
• depends-on=Mergifyio/mergify-cli#1447 [⛓️ refactor(config): standardize the workspace on serde_yaml_ng for YAML parsing #1447 [stack]]
• depends-on=Mergifyio/mergify-cli#1464 [⛓️ fix(cli): accept --debug on the Rust binary and actually toggle it in Python #1464 [stack]]

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• depends-on=Mergifyio/mergify-cli#1439 [⛓️ refactor(rust): share test scaffolding via mergify-test-support crate #1439 [stack]]
• depends-on=Mergifyio/mergify-cli#1441 [⛓️ refactor(core): introduce CommandContext for the queue+freeze prelude #1441 [stack]]
• depends-on=Mergifyio/mergify-cli#1442 [⛓️ refactor(ci): consolidate the CI-env scrubber into a shared testing module #1442 [stack]]
• depends-on=Mergifyio/mergify-cli#1443 [⛓️ refactor: drop stale Phase X.Y doc markers and one inline color branch #1443 [stack]]
• depends-on=Mergifyio/mergify-cli#1444 [⛓️ refactor(tui): share StyledGlyph across queue show/status renderers #1444 [stack]]
• depends-on=Mergifyio/mergify-cli#1445 [⛓️ refactor(queue): drop indexmap, group_by_scope returns a Vec<(K, V)> #1445 [stack]]
• depends-on=Mergifyio/mergify-cli#1446 [⛓️ refactor(ci): swap uuid for getrandom in the GHA heredoc delimiter #1446 [stack]]
• depends-on=Mergifyio/mergify-cli#1447 [⛓️ refactor(config): standardize the workspace on serde_yaml_ng for YAML parsing #1447 [stack]]
• depends-on=Mergifyio/mergify-cli#1464 [⛓️ fix(cli): accept --debug on the Rust binary and actually toggle it in Python #1464 [stack]]

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[jd]

Revision history

#	Type	Changes	Reason	Date
1	initial	96a0757		2026-05-27 07:53 UTC
2	rebase	96a0757 → 14ce64c (rebase only)		2026-05-27 07:53 UTC
3	rebase	14ce64c → 46f9c59 (rebase only)		2026-05-27 08:27 UTC
4	rebase	46f9c59 → ae16810 (rebase only)		2026-05-27 10:04 UTC