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The Migration Flip That Took Down a Live Customer (and the Blast Radius I Could Measure in 12 Seconds)
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The Ambient-Global Bug: When "Current Account" Is a Mutable Global Your Whole App Reads
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Scope Is the Unit, Not Persona: Rethinking How You Load Context Into AI Agents
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I overwrote a live production mailer because I assumed an ID was free
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Same Root Cause Is Not Same Fix: Verify the Data Shape, Not Just the Symptom
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The Auto-Approval Feature That Quietly Rewrote Curated Data
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Single-currency database, dual-currency checkout: adding CAD without a schema change
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I Almost Built an Entitlement System for a Feature That Was Already a Page
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The ambient-global bug: when \"current account\" is a mutable global 100 call sites read
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The ambient-global bug: when current account is a mutable global your whole app reads
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GetAccountFilter and the Case for an Explicit Context You Can Override
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A New Feature Is the Best Fuzz-Tester for Your Existing Data Model
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Routing Logic That Does Work on the Way In: Redirect, Auto-Select, or Prompt
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I Wrote a 1,477-Line Site-Recovery Engine in Classic ASP: Copy First, Remap IDs Second
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Don't leave the recovery gun loaded: scrubbing prod constants at end of day
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N Drifting Copies Share One Bug: The Legacy Consolidation Thesis