feat: add gitt miner status command

[eureka0928]

Summary

Fixes #354

Adds gitt miner status — a lightweight CLI command that lets miners check their eligibility gate progress and PR overview without running a full validator scoring pipeline.

What it does:

• Validates the miner's GitHub PAT (single API call)
• Resolves wallet/hotkey UID on the Bittensor network
• Fetches PRs across all incentivized repositories using the same GraphQL pipeline as validators (load_miners_prs)
• Calculates credibility locally using calculate_credibility() (pure math — merged/(merged+closed-mulligan))
• Displays eligibility status: merged PR count vs threshold, credibility vs minimum

What it does NOT do:

• No token scoring / tree-sitter / file content fetching — that's validator-side only
• Shows LIKELY ELIGIBLE with a caveat since the token_score >= 5 threshold can't be verified without the full pipeline (the threshold is very low, so false positives are rare)

Usage

# Basic status check
gitt miner status --wallet alice --hotkey default

# Detailed per-PR breakdown
gitt miner status --wallet alice --hotkey default --detail

# JSON output for scripting
gitt miner status --network test --json-output

Example Output

PAT valid — @alice

Miner Status
UID: 42  |  GitHub: @alice  |  Network: wss://test.finney.opentensor.ai

Eligibility Gate
  Merged PRs:    7/5  pass
  Credibility:   0.88/0.75  pass  (7M/1C, 1 mulligan)
  Status:        LIKELY ELIGIBLE
  Note: Final eligibility depends on token scoring by validators

Lookback Window (35 days)
  Merged: 7  |  Open: 2  |  Closed: 2
  Unique repos: 4
  Open PR threshold: 10 base (increases with token score)

Design Decisions

• Reuses existing infrastructure: imports _error, _load_config_value, _resolve_endpoint from post.py — no duplication
• Lazy imports: bittensor, MinerEvaluation, load_miners_prs, calculate_credibility are imported inside the function body to keep gitt --help fast
• PAT cleared after use: miner_eval.github_pat = None after fetching (line 112)
• _StatusContext class: consolidates output parameters with derived properties to keep _output_rich / _output_json signatures clean
• Follows existing CLI patterns: same option style as post/check, Rich status spinners, --json-output flag

Related Issues

Fixes #354

Type of Change

• Bug fix
• New feature
• Refactor
• Documentation
• Other (describe below)

Testing

• Tests added/updated

• Manually tested

• All imports verified against current codebase (calculate_credibility, load_miners_prs, load_master_repo_weights, get_github_user, MinerEvaluation)

• All PullRequest / MinerEvaluation attributes used exist on the dataclasses

• ruff check — all checks passed

• ruff format — all files formatted

• Module loads cleanly: from gittensor.cli.miner_commands.status import miner_status

Checklist

• Code follows project style guidelines
• Self-review completed
• Changes are documented (if applicable)

[eureka0928]

Hi @anderdc I put this PR as we discussed on the Discord
Thank you for your review

[anderdc]

why is this even necessary if someone can look at the UI? not sure I see the actual advantage/argument for including this?