Disable interactive git credential prompts on network operations

[bschellenberger2600]

Summary

• Add PrepareNetworkGit to set GIT_TERMINAL_PROMPT=0 on fetch/push subprocesses
• Apply to FetchRemote, DetectConflict, PushBranch, and PushAllBranches
• Add unit and HTTPS integration tests asserting fast non-interactive auth failure

Why

Batch CLIs (git-fire, git-rain) run parallel network git operations. When HTTPS remotes lack cached credentials, git prompts on the controlling TTY — bypassing captured stdout/stderr and interleaving Username for 'https://github.com': with structured output.

Related PRs

• git-rain: Disable interactive git credential prompts on fetch operations git-rain#16
• git-fire: Regression tests for non-interactive git network failures git-fire#107

Merge order: this PR first → tag harness release → update git-fire #107 go.mod pin → merge siblings.

Test plan

• go test -race -count=1 ./git/ -run 'TestNonInteractive|TestPrepareNetwork|TestFetchRemote_Unauthenticated' -v
• CI green

[coderabbitai]

📝 Walkthrough

Walkthrough

Adds nonInteractiveGitEnv and PrepareNetworkGit to git/command.go to enforce GIT_TERMINAL_PROMPT=0 on git commands. Calls PrepareNetworkGit before executing fetch and push commands in DetectConflict, FetchRemote, PushBranch, and PushAllBranches in git/operations.go. Adds unit and integration tests in git/command_test.go.

Changes

Non-interactive Git environment

Layer / File(s)	Summary
nonInteractiveGitEnv and PrepareNetworkGit implementation git/command.go	Defines gitTerminalPromptKey constant, nonInteractiveGitEnv (filters existing GIT_TERMINAL_PROMPT entries from env and appends GIT_TERMINAL_PROMPT=0), and PrepareNetworkGit (sets cmd.Env via nonInteractiveGitEnv).
Callsite wiring and tests git/operations.go, git/command_test.go	Adds PrepareNetworkGit(cmd) calls before CombinedOutput/Run in DetectConflict, FetchRemote, PushBranch, and PushAllBranches. Tests cover env override behavior, exec.Cmd mutation, unauthenticated HTTPS fetch failure, and a containsEnv helper.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐇 Hop hop, no prompt today,
The terminal won't get in the way!
GIT_TERMINAL_PROMPT=0 set just right,
Fetch and push fly through the night.
A rabbit's patch, clean and bright! ✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 60.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically describes the main change: disabling interactive git credential prompts during network operations, which aligns with the PR's primary purpose of addressing credential prompts in batch CLI operations.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/non-interactive-git-network

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[cursor]

Cursor Bugbot check passed with no issues, but no Cursor[bot] PR review comment (BUGBOT_REVIEW) was posted, so I cannot approve without that signal. Maintainer review is recommended; no reviewers were assigned (sole human contributor is the PR author).

  

_{Sent by Cursor Approval Agent: Pull Request Approver}