feat(tracking): honor DO_NOT_TRACK and COMFY_NO_TELEMETRY env vars

[bigcat88]

• Honor DO_NOT_TRACK (https://consoledonottrack.com/) and COMFY_NO_TELEMETRY per consoledonottrack semantics: any value other than empty or 0 opts out
• Short-circuits the consent prompt — no interactive prompt, no auto-enable in non-TTY, no anonymous user_id persistence
• Short-circuits track_event() defense-in-depth so no provider is dispatched
• On-disk consent flag is left untouched — a later run without the env var still gets normal consent flow
• Addresses Unexpected Telemetry Enablement in Non-Interactive Environments (comfy-cli==1.10.2) #462

[coderabbitai]

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 21b8d4de-05c1-4f0d-bb57-8aa8c1fd1d2a

📥 Commits

Reviewing files that changed from the base of the PR and between 5b014ff and 2c73b8d.

📒 Files selected for processing (2)

• comfy_cli/tracking.py
• tests/comfy_cli/test_tracking.py

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📝 Walkthrough

Walkthrough

Adds an env-var gate: _telemetry_disabled_by_env() treats non-empty (except "0") DO_NOT_TRACK or COMFY_NO_TELEMETRY as opt-out. When set, track_event() and prompt_tracking_consent() return early and skip telemetry emission and consent flows. Tests exercise both behavior and helper semantics — silent but effective, like a rhyme that mutes a chime.

Changes

Environment Variable Telemetry Opt-Out

Layer / File(s)	Summary
Environment variable opt-out gate implementation comfy_cli/tracking.py	_telemetry_disabled_by_env() checks DO_NOT_TRACK and COMFY_NO_TELEMETRY (range_e4ae46523a26); track_event() early-returns when disabled (range_b6347ab00097); prompt_tracking_consent() skips prompting and session logic when disabled (range_2f7ed0acc3b1).
Environment variable opt-out test coverage tests/comfy_cli/test_tracking.py	Adds TestEnvVarOptOut and helper tests validating opt-out semantics and edge cases (range_b81994129a08) and unit tests for _telemetry_disabled_by_env() value semantics and single-var sufficiency (range_e500c8f486fe).

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
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.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch alexander/telemetry-env-opt-out

✨ Simplify code

• Create PR with simplified code
• Commit simplified code in branch alexander/telemetry-env-opt-out

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

@@            Coverage Diff             @@
##             main     #463      +/-   ##
==========================================
+ Coverage   83.22%   83.25%   +0.02%     
==========================================
  Files          45       45              
  Lines        6791     6801      +10     
==========================================
+ Hits         5652     5662      +10     
  Misses       1139     1139              

Files with missing lines	Coverage Δ
comfy_cli/tracking.py	94.03% <100.00%> (+0.42%)	⬆️

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