diff --git a/docs/plans/2026-02-19-phase1-core-implementation-design.md b/docs/plans/completed/2026-02-19-phase1-core-implementation-design.md
similarity index 100%
rename from docs/plans/2026-02-19-phase1-core-implementation-design.md
rename to docs/plans/completed/2026-02-19-phase1-core-implementation-design.md
diff --git a/docs/plans/2026-02-19-phase1-implementation.md b/docs/plans/completed/2026-02-19-phase1-implementation.md
similarity index 100%
rename from docs/plans/2026-02-19-phase1-implementation.md
rename to docs/plans/completed/2026-02-19-phase1-implementation.md
diff --git a/docs/plans/2026-02-19-phase2-robustness-design.md b/docs/plans/completed/2026-02-19-phase2-robustness-design.md
similarity index 100%
rename from docs/plans/2026-02-19-phase2-robustness-design.md
rename to docs/plans/completed/2026-02-19-phase2-robustness-design.md
diff --git a/docs/plans/2026-02-19-phase2-robustness.md b/docs/plans/completed/2026-02-19-phase2-robustness.md
similarity index 100%
rename from docs/plans/2026-02-19-phase2-robustness.md
rename to docs/plans/completed/2026-02-19-phase2-robustness.md
diff --git a/docs/plans/2026-02-19-phase3-implementation.md b/docs/plans/completed/2026-02-19-phase3-implementation.md
similarity index 100%
rename from docs/plans/2026-02-19-phase3-implementation.md
rename to docs/plans/completed/2026-02-19-phase3-implementation.md
diff --git a/docs/plans/2026-02-19-phase3-model-support-design.md b/docs/plans/completed/2026-02-19-phase3-model-support-design.md
similarity index 100%
rename from docs/plans/2026-02-19-phase3-model-support-design.md
rename to docs/plans/completed/2026-02-19-phase3-model-support-design.md
diff --git a/docs/plans/2026-02-19-phase4-implementation.md b/docs/plans/completed/2026-02-19-phase4-implementation.md
similarity index 100%
rename from docs/plans/2026-02-19-phase4-implementation.md
rename to docs/plans/completed/2026-02-19-phase4-implementation.md
diff --git a/docs/plans/2026-02-19-phase4-performance-design.md b/docs/plans/completed/2026-02-19-phase4-performance-design.md
similarity index 100%
rename from docs/plans/2026-02-19-phase4-performance-design.md
rename to docs/plans/completed/2026-02-19-phase4-performance-design.md