docs(plans): scope Step 12 — compat removal and v1 deletion#49
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Add docs/plans/step-12-v1-removal.md: the grounded plan for the final v2.0.0 step. Verified against the code (2026-07-05) that v1's live surface is only the performance/dev/tools entry points, that dev/tools bridge functions have zero live callers (already off v1), and that performance is the one real migration (mq-performance-menu.sh sources v1/commands/performance.sh, 504 LOC). Sequences six workstreams lowest-risk-first, with a golden-snapshot gate before the performance migration and freeze-gate/grep gates before deleting the 24-file v1 tree (incl. its duplicate lib/ui.sh). Plan doc only; no runtime or ROADMAP changes. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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docs/plans/step-12-v1-removal.md— the grounded plan for the final v2.0.0 step (deleteterminal/mqlaunch-v1/). Plan doc only; no runtime, no ROADMAP changes.Scope (verified against the code, 2026-07-05)
v1 is 24 files / ~1629 LOC, but its live surface is tiny and mostly already dead:
dev_menu_loop/tools_menu_loop; the v1 bridge functions (open_v1_dev_menu,run_v1_dev_command, tools equivalents) have zero live callers. Dead-code decommission.mq-performance-menu.shsourcesv1/commands/performance.sh(504 LOC) andperformance-bridge.shsubprocesses v1.Sequenced (6 workstreams, lowest-risk-first, one PR each)
12.1/12.2drop the dead dev/tools bridges →12.3golden-snapshot performance output →12.4migrateperformance.shto a live lib (HIGH) →12.5ALLOWlist empty + freeze gate green →12.6delete the v1 tree (incl. its duplicatelib/ui.sh, closing the last "one UI authority" DoD item).Gates: golden snapshot before the performance migration (R1 — no output drift), freeze-gate + grep sweep prove zero live→v1 before deletion (R6). The plan also flags that v1's
lib/ui.shmay surface a header/format delta on migration — to be treated as a deliberate behavior change, not silent.Part of the
v2.0.0runtime-authority track; unblocked by Step 11a.🤖 Generated with Claude Code