chore: update PR knowledge base

[Galzi1]

Automated update of the PR knowledge base.

[qodo-code-review]

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Review Summary by Qodo

Update knowledge base with minimum charge feature documentation

📝 Documentation

Walkthroughs

Description

• Added 4 new knowledge base entries documenting minimum charge feature
• Updated manifest and index with new architecture, domain, and gotcha entries
• Documented minimum charge validation gaps and design decisions
• Consolidated discount logic patterns in knowledge base

Diagram

flowchart LR
  KB["Knowledge Base"] --> MANIFEST["Update .manifest.json"]
  KB --> INDEX["Update INDEX.md"]
  KB --> ARCH["Add Architecture Decision"]
  KB --> DOMAIN["Add Domain Knowledge"]
  KB --> GOTCHA1["Add Gotcha Entry 1"]
  KB --> GOTCHA2["Add Gotcha Entry 2"]
  MANIFEST --> COUNT1["Architecture: 4→5"]
  MANIFEST --> COUNT2["Domain: 5→6"]
  MANIFEST --> COUNT3["Gotcha: 8→10"]

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File Changes

1. kb/.manifest.json ⚙️ Configuration changes +5/-1

Added 4 new knowledge base entry mappings

• Added 4 new knowledge base entry mappings with IDs and file paths
• Updated manifest to include minimum charge related entries
• Entries cover architecture decisions, domain knowledge, and gotchas

kb/.manifest.json

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2. kb/INDEX.md 📝 Documentation +7/-3

Updated index counts and added new entries

• Updated Architecture Decision count from 4 to 5 entries
• Updated Domain Knowledge count from 5 to 6 entries
• Updated Gotcha count from 8 to 10 entries
• Added new entries for minimum charge consolidation, clarification, and validation gaps

kb/INDEX.md

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3. kb/architecture_decision/consolidating-discount-logic-into-a-single-helper-reduces.md 📝 Documentation +44/-0

New architecture decision on discount logic consolidation

• New file documenting architecture decision for minimum charge helper
• Explains consolidation of discount logic into single helper to reduce duplication
• Includes code snippet showing calculate_total_with_minimum_charge implementation
• References PR #10 with minimum charge feature implementation

kb/architecture_decision/consolidating-discount-logic-into-a-single-helper-reduces.md

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View more (3)

4. kb/domain_knowledge/clarifying-whether-minimum-charge-applies-to-pre-tax.md 📝 Documentation +41/-0

New domain knowledge on minimum charge application scope

• New file documenting domain knowledge about minimum charge scope
• Clarifies whether minimum_charge applies to pre-tax subtotal or final total
• Highlights importance of explicit documentation for pricing policy
• References PR #10 minimum charge feature

kb/domain_knowledge/clarifying-whether-minimum-charge-applies-to-pre-tax.md

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5. kb/gotcha/minimum-charge-validation-is-missing-which-can-cause.md 📝 Documentation +43/-0

New gotcha documenting missing minimum charge validation

• New file documenting gotcha about missing minimum charge validation
• Describes symptoms of negative amounts and unintended charge increases
• Explains root cause of missing parameter validation
• Recommends validation bounds checking for minimum_charge parameter

kb/gotcha/minimum-charge-validation-is-missing-which-can-cause.md

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6. kb/gotcha/negative-discount-or-minimum-charge-inputs-silently-produce.md 📝 Documentation +44/-0

New gotcha on negative input validation inconsistency

• New file documenting gotcha about negative input handling
• Describes inconsistency with existing calculate_total_with_discount validation
• Explains how negative values silently produce incorrect financial calculations
• Recommends adding input validation guards for both parameters

kb/gotcha/negative-discount-or-minimum-charge-inputs-silently-produce.md

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[qodo-code-review]

Code Review by Qodo

🐞 Bugs (1)   📘 Rule violations (0)   📎 Requirement gaps (0)   🎨 UX Issues (0)

🐞\ ⚙ Maintainability (1)

1. Missing trailing newline 🐞 ⚙

Description

kb/.manifest.json is committed without a final newline, which makes git report `\ No newline at
end of file` and creates avoidable diff noise on future updates.

Code

kb/.manifest.json[25]

}

Evidence

The PR diff shows \ No newline at end of file for kb/.manifest.json, indicating the file ends
immediately after the closing } without a newline.

kb/.manifest.json[20-25]

Agent prompt

The issue below was found during a code review. Follow the provided context and guidance below and implement a solution

### Issue description
`kb/.manifest.json` has no trailing newline (git shows `\\ No newline at end of file`). This creates unnecessary diff noise and is a common formatting convention violation.

### Issue Context
This is a generated/updated manifest; adding a newline is safe and keeps future diffs cleaner.

### Fix Focus Areas
- kb/.manifest.json[25-25]

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