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Memory Bank - CSS Migration Project 2509

Project Context

Goal: Migrate from Beaver Builder FL-node system to maintainable BEM component architecture Timeline: Sprint 6.X - Component extraction from careers.html Scope: 43 FL-nodes to extract, 8 completed (19%)

Key Decisions

Decision 1: PostCSS @import Strategy (Phase 1B)

Date: Sprint 5 (commits b2bd12394, 7c530341d, ea827f825) Rationale:

  • Keep source CSS files separate for clarity and maintainability
  • Use PostCSS @import-inliner plugin for build-time consolidation
  • Avoid manual CSS duplication and merge conflicts Outcome: Successfully consolidated 78 CSS files (74% reduction: 105 → 27 files)

Decision 2: BEM Addition Before Removal (Phase 2)

Date: Sprint 6.1-6.2 (57 commits) Rationale:

  • Add BEM classes first while retaining FL-node classes
  • Verify visual fidelity with both systems running in parallel
  • Remove FL-nodes only after BEM is proven stable Outcome: 57/57 BEM additions completed, zero regressions

Decision 3: Test with Fresh Asset Compilation

Date: Oct 2, 2025 (Session 1759308485653) Problem: Visual regression tests failing with 81-90% difference Root Cause: Stale precompiled assets not including latest BEM CSS changes Solution: Always run tests with PRECOMPILED_ASSETS=false Validation: Careers test passes consistently when assets are fresh

Decision 4: Solo Execution for Repetitive FL-node Extraction

Date: Oct 2, 2025 (Product Owner directive) Rationale:

  • FL-node extraction is repetitive pattern-based work (35 remaining items)
  • No need for full XP team spawning for simple consolidation
  • Faster execution with solo work + intensive testing Approach: Solo execution, test after each change, commit on green, continue

Code Patterns

Pattern 1: TDD Cycle for Component Extraction

RED: Identify FL-node CSS dependencies
GREEN: Add BEM classes to HTML, consolidate CSS
REFACTOR: Remove duplicate FL-node CSS, cleanup
TEST: env PRECOMPILED_ASSETS=false bin/rake test:critical
COMMIT: Micro-commit on green tests

Pattern 2: BEM Component Structure

<!-- Before (FL-node) -->
<div class="fl-col fl-node-yx43bujcaiqn hover-box">

<!-- After (BEM + FL retention during transition) -->
<div class="fl-col fl-col-small hover-box c-feature-card">

<!-- Final (Pure BEM) -->
<div class="c-feature-card c-feature-card--variant">

Pattern 3: CSS Consolidation

/* Before: 3 separate FL-node selectors */
.fl-node-yx43bujcaiqn { width: 32%; margin-right: 30px; }
.fl-node-ktz4ipj39vd6 { width: 36%; margin: 0 30px; }
.fl-node-m39uvorzy5g8 { width: 32%; margin-left: 30px; }

/* After: DRY BEM pattern */
.c-feature-card { width: 32%; margin-right: 30px; }
.c-feature-card--second { width: 36%; margin: 0 30px; }
.c-feature-card--third { margin-right: 0; }

Session History

Session 1759308485653 (Oct 2, 2025)

Coordinator: Hive Mind Queen (Scrum Master) Phases Completed:

  1. ✅ Phase 1: Resolved careers test failures (stale asset cache issue)
  2. ✅ Phase 2: Updated coordination documentation with accurate @import approach
  3. ⏳ Phase 3: Ready to resume FL-node extraction (9-43/43)

Key Outcomes:

  • Diagnosed test failure root cause: precompiled asset caching
  • Documented PostCSS @import implementation strategy
  • Confirmed autonomous solo execution for remaining 35 FL-nodes
  • Established test protocol: PRECOMPILED_ASSETS=false for reliability

Lessons Learned:

  • Hugo's asset compilation caches aggressively - force fresh builds for CSS changes
  • Visual regression tests are sensitive to compilation state, not just code changes
  • Solo autonomous execution appropriate for repetitive pattern-based refactoring work