chore(deps): remove redundant Pygments pin from requirements.txt (closes #17)

[timon0305]

Problem

requirements.txt line 12 pinned Pygments==2.19.2. Application source has zero pygments references — verified via grep -rin pygments across all .py / .html / .js / .css. The line is residue from a stale pip freeze snapshot.

Change

Drop the explicit pin.

Notable nuance worth flagging for the reviewer: pytest 9.x lists pygments as a transitive Requires: (different from 8.x where it was optional / extras-only). So a fresh pip install -r requirements.txt will still install pygments — via pytest's dep tree, not ours. This is a "drop a redundant explicit version pin" change, not a "remove an installed package" change. The benefit is that future pytest bumps which need a different pygments range no longer fight an unrelated explicit pin in this file.

Test plan

Built a clean venv from this requirements.txt and verified end-to-end:

Check	Result
pip install -r requirements.txt succeeds	✅
pygments still installed transitively (via pytest)	✅ — version 2.20.0
pytest tests/	✅ 75 / 75 OK
python app.py + curl /	✅ HTTP 200 on http://127.0.0.1:5000/
Static grep finds zero pygments references in app source	✅

Closes #17.

Summary by CodeRabbit

• Chores
  • Removed unused dependency from project requirements.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 0f3fb02b-13d1-4cc4-a932-9652a86a6881

📥 Commits

Reviewing files that changed from the base of the PR and between ceefe1c and 42f6391.

📒 Files selected for processing (1)

• requirements.txt

💤 Files with no reviewable changes (1)

• requirements.txt

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📝 Walkthrough

Walkthrough

The Pygments==2.19.2 dependency is removed from requirements.txt. Grep verification in the linked issue confirms no source files import or reference Pygments anywhere, making this a stale transitive dependency left over from a previous pip freeze snapshot.

Changes

Dependency Cleanup

Layer / File(s)	Summary
Unused Dependency Removal requirements.txt	Pygments==2.19.2 line is deleted. Verified unused across all .py, .html, .js, and .css source files.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 One less wheel upon the path,
Pygments gone, no aftermath—
A phantom dep, now freed at last,
Lighter installs, our future's cast! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and specifically describes the main change: removing the redundant Pygments dependency pin from requirements.txt, matching the actual changeset.
Linked Issues check	✅ Passed	The PR fully addresses issue #17 by removing the Pygments==2.19.2 line as required, with verification that no source files reference pygments and tests pass.
Out of Scope Changes check	✅ Passed	The PR contains only the single intended change (Pygments line removal) with no unrelated or out-of-scope modifications to other files or dependencies.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/remove-pygments-17

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