chore: update PR knowledge base

[Galzi1]

Automated update of the PR knowledge base.

[qodo-code-review]

Review Summary by Qodo

Add knowledge base entries for capped percentage discount feature

✨ Enhancement 📝 Documentation

Walkthroughs

Description

• Add three new knowledge base entries documenting discount calculation patterns
• Document capped percentage discount helper architectural decision and implementation
• Capture domain knowledge about discount calculation rules and business logic requirements
• Identify gotcha with unvalidated discount parameters causing silent calculation errors

Diagram

flowchart LR
  PR["PR #7: Capped Percentage Discount"] --> KB["Knowledge Base Update"]
  KB --> AD["Architecture Decision:<br/>Refactor to delegate to shared helper"]
  KB --> DK["Domain Knowledge:<br/>Document discount calculation rules"]
  KB --> GK["Gotcha:<br/>Unvalidated parameters cause silent errors"]
  AD --> Manifest["Update .manifest.json"]
  DK --> Manifest
  GK --> Manifest
  Manifest --> Index["Update INDEX.md"]

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File Changes

1. kb/.manifest.json ⚙️ Configuration changes +4/-1

Add three new knowledge base entry mappings

• Add three new knowledge base entry IDs mapping to their respective markdown files
• Entry 3067724989 for gotcha about negative discount caps and rates above 1.0
• Entry 3067725001 for architecture decision on capped discount refactoring
• Entry 3067725011 for domain knowledge about discount calculation rules

kb/.manifest.json

---

2. kb/INDEX.md 📝 Documentation +6/-3

Update index counts and add three new entries

• Increment Architecture Decision count from 3 to 4 with new refactoring entry
• Increment Domain Knowledge count from 4 to 5 with new discount rules entry
• Increment Gotcha count from 7 to 8 with new validation issue entry
• Add three new entries to their respective category sections with descriptive titles

kb/INDEX.md

---

3. kb/architecture_decision/refactor-to-calculate-capped-discount-once-and-delegate-to.md 📝 Documentation +45/-0

Document capped discount refactoring architecture decision

• Document architectural decision to delegate capped percentage discount to existing
 absolute-discount helper
• Explain consolidation of pricing mathematics and discount clamping logic into single code path
• Include code snippet showing new calculate_total_with_capped_percentage_discount function
 implementation
• Reference PR #7 and discussion comment with metadata

kb/architecture_decision/refactor-to-calculate-capped-discount-once-and-delegate-to.md

---

View more (2)

4. kb/domain_knowledge/discount-calculation-rules-pre-post-tax-and-scope-are.md 📝 Documentation +46/-0

Document discount calculation rules business logic

• Document business logic requirements for discount calculation rules
• Clarify need for explicit documentation of pre/post-tax application and scope (order vs line-item
 level)
• Highlight that maximum discount amount behavior requires clear specification
• Include code snippet showing the new capped percentage discount function

kb/domain_knowledge/discount-calculation-rules-pre-post-tax-and-scope-are.md

---

5. kb/gotcha/negative-discount-caps-and-rates-above-1-0-can-silently.md 📝 Documentation +43/-0

Document unvalidated discount parameter gotcha

• Identify gotcha where unvalidated discount_rate and max_discount_amount parameters cause
 silent calculation errors
• Explain how negative caps or rates above 1.0 can invert discounts into surcharges or create
 negative subtotals
• Recommend input validation to prevent these edge cases
• Include code snippet showing vulnerable implementation in capped percentage discount function

kb/gotcha/negative-discount-caps-and-rates-above-1-0-can-silently.md

---

[qodo-code-review]

Code Review by Qodo

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

🐞\ ⚙ Maintainability (1)

1. Missing EOF newline 🐞 ⚙

Description

kb/.manifest.json is committed without a trailing newline at end-of-file, which can cause style/lint
failures in some environments and creates noisier diffs on future edits.

Code

kb/.manifest.json[R20-21]

+  "3067725011": "domain_knowledge/discount-calculation-rules-pre-post-tax-and-scope-are.md"
}

Evidence

The PR diff for kb/.manifest.json includes the git marker "\ No newline at end of file", which
indicates the file ends immediately after the closing brace without a final newline.

kb/.manifest.json[17-21]

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` is missing a trailing newline at EOF.

### Issue Context
The git diff shows `\ No newline at end of file` for `kb/.manifest.json`.

### Fix Focus Areas
- kb/.manifest.json[17-21]

ⓘ Copy this prompt and use it to remediate the issue with your preferred AI generation tools

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