Add max file size limit 10MB for photo uploads

[neal-bpm]

Describe your changes

Adds an explicit 10 MB file size limit to photo uploads in the Program form. Previously allow_upload had no max_file_size set, meaning Phoenix's default of 8 MB applied silently. This makes the limit explicit and raises it to 10 MB, aligning with user expectations for photo uploads.

Checklist before requesting a review

• I have performed a self-review of my code
• If it is a core feature, I have added tests.
• Are there other PRs or Issues that I should link to here?
• Will this be part of a product update? If yes, please write one phrase
  about this update in the description above.

Summary by CodeRabbit

• Bug Fixes
  • Photo uploads now enforce a 10 MB maximum file size. Accepted file types and the 10-upload limit are unchanged.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Repository: bikebrigade/dispatch/.coderabbit.yaml
• Review profile: CHILL
• Plan: Advanced
• Run ID: 747f7de2-3c2f-4ecd-b8aa-460fe8ff8e69

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📥 Commits

Reviewing files that changed from the base of the PR and between 6930d01 and 0d78529.

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📒 Files selected for processing (1)

• lib/bike_brigade_web/live/program_live/form_component.ex

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📝 Walkthrough

Walkthrough

Photo uploads now have a maximum file size of 10,000,000 bytes. The accepted extensions and 10-upload limit remain unchanged.

Changes

Photo uploads

Layer / File(s)	Summary
Set photo upload limit lib/bike_brigade_web/live/program_live/form_component.ex	mount/1 sets a maximum size of 10,000,000 bytes per photo upload. Accepted extensions and the 10-upload limit remain unchanged.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Feature

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Merge Risk: ⚪ Minimal · up to 0d785

Oversized photo uploads are rejected before storage, and no material merge-blocking issue is evident.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Title check		The title clearly and concisely describes the main change: adding a 10 MB maximum file size for photo uploads.
Description check		The description explains the change, provides relevant context, and includes the required checklist. Optional ticket, test, issue, and product-update details are either not applicable or clearly marke…

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• Fix all pre-merge checks with AI

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Commit to this branch
• Create a new PR

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🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

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• Autofix · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

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