[CI] Get the correct target branch on public interface validation

[testableapple]

Summary by CodeRabbit

• New Features
  • None.
• Refactor
  • Reworked validation to compare current changes against the target branch with automatic branch restoration and clearer reporting.
• Chores
  • Streamlined release and publish workflows by removing deprecated tasks and redundant configuration.
  • Improved CI gatekeeping and branch handling for more reliable runs and fewer false failures.
  • Reduced manual parameters in automation to simplify maintenance.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

Updates the Fastlane pipeline by adding an XcodeProj dependency, removing two Cocoapods-related lanes, simplifying release/publish calls, and reworking validate_public_interface to auto-detect the target branch, run analyses on current and target branches, diff results, and restore the original branch.

Changes

Cohort / File(s)	Summary
Fastlane pipeline updates fastlane/Fastfile	- Add require 'xcodeproj' - Remove lanes: pod_lint, cocoapods_integration - Remove podspec_names option from release/publish invocations - Rework validate_public_interface: auto-detect target_branch (GITHUB_BASE_REF → main/develop), log target, analyze current branch, checkout target to analyze, diff/report, restore original branch - CI/branch-handling control-flow adjustments

Sequence Diagram(s)

sequenceDiagram
  autonumber
  participant CI as CI
  participant FL as Fastlane
  participant GIT as Git
  participant ANA as Public Interface Analyzer

  Note over FL: validate_public_interface (updated flow)

  CI->>FL: Invoke lane
  FL->>FL: Determine target_branch (GITHUB_BASE_REF → main/develop)
  FL->>ANA: Analyze current branch API surface
  FL->>GIT: git checkout target_branch
  FL->>ANA: Analyze target branch API surface
  FL->>FL: Diff analyses and report
  FL->>GIT: Restore original branch
  FL-->>CI: Exit with status

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Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Possibly related PRs

• [CI] Implement public interface validation #3740 — Modifies the same validate_public_interface lane to implement/extend branch-diff public interface analysis.

Suggested reviewers

• laevandus
• martinmitrevski

Poem

A bunny hops through lanes so spry, 🐇
Drops pods, waves lint goodbye.
Sniffs branches—which to chase?
Diffs the tracks from place to place.
Carrot raised: “API is clean!”
Back to the burrow, swift and keen.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch ci/fix-public-interface-on-develop

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📥 Commits

Reviewing files that changed from the base of the PR and between cfddb24 and 6744373.

📒 Files selected for processing (1)

• fastlane/Fastfile (3 hunks)

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