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lint: duplicate_business_key for pages sharing a frontmatter ticket - #1472

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belchiordameao-cmd:lint-duplicate-business-key
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belchiordameao-cmd wants to merge 1 commit into
akitaonrails:mainfrom
belchiordameao-cmd:lint-duplicate-business-key

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Refs #1471.

Adds a zero-LLM lint rule, duplicate_business_key. Two or more live pages whose frontmatter has the same ticket value (a string, or an array of strings) produce one warning finding that lists every such page. Blank ids are ignored, and matching ignores case and surrounding whitespace.

Why: in a field store, 33 external ticket ids each appeared on 2+ live pages. Those pages recorded the same decision twice in wording too different for the duplicate-title check, or for any similarity threshold, to pair them. A shared business key catches them reliably.

  • rule_based_findings only; no schema or migration change, and nothing is deleted or merged. Like the other rule-based findings, it is advisory.
  • Test: rule_pass_flags_duplicate_business_key, covering a string vs. an array that share an id, plus a blank id that must not count.

Not built locally (no Rust toolchain on the machine I prepared this on), so I'm relying on CI. Happy to rename the field or make it configurable through LintOptions if you prefer.

🤖 Generated with Claude Code

…s_key)

Refs akitaonrails#1471

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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