# Active work — cross-machine resume ledger **Snapshot: 2026-07-28.** This file records volatile work that has not landed on `main`. Read it after `docs/agent-handoff.md`. Remove completed entries when their PR merges; do not let this become a second permanent backlog. **No lane below is retained past its merge.** This snapshot removes the resource-op delete guard (#186) and dired Stage 2 framing (#171) lanes the moment their PRs merged, because the same commit put their load-bearing decisions into `docs/agent-handoff.md` §1 — rule 4's precondition, satisfied deliberately rather than deferred. The bottom-panel lane is not removed: 2B-2 landing leaves 2B-3 and Stage 3 ahead of it, so the lane is rewritten to the remaining plan. **#188's lane arrived with #188**, which is the point: with several PRs open, a lane written on `main` for work that lands elsewhere re-conflicts on every merge. Written on its own branch it costs one conflict, at the merge that would have happened anyway. The PTY terminate diagnostic (#176) was the last lane retained past its merge — retained because rule 4 removes a merged lane only *after* its durable facts reach `docs/agent-handoff.md`, and that absorption was unowned. The 2026-07-28 snapshot owned it: #176's facts are now in the handoff (§1's arc bullet and §5's two ops lessons about ticking observers and proving child exit), so its lane is gone. The Lean 4, GPU-terminal-input, inline-math (#172), dired (#169), and terminal config + copy mode lanes were removed the same way — the last of these was #180's work, folded into #182 so two open PRs would stop re-conflicting in this file. **Trust the canonical-base line below over any lane header**: if a PR number appears in `git log --first-parent githubsucks/main`, it has landed regardless of what a lane says. **Two open PRs had no lane here at all before the 2026-07-28 snapshot** — #174 and #171. An open PR is exactly the volatile work this file exists to record, so its absence is a ledger defect rather than a tidy omission: #171 drifted **153 commits** while invisible here, and its still-green old CI run described a tree nobody had looked at since. **When a PR is opened, give it a lane.** All three have since merged — #174, #171 and #186 — so per rule 4 their lanes are gone again and their durable facts are in `docs/agent-handoff.md` (§5 for #174's lesson, §1 for the two framings). ## Repository authority - Canonical development URL: `https://github.com/levineuwirth/pmacs.git`. This ledger uses the normalized local alias `githubsucks` so its refs and recovery commands are identical on every machine. Remote names are otherwise machine-local: `origin` may name this canonical URL, a release mirror, or something else, and therefore has no authority by name alone. - Canonical base at this snapshot: `githubsucks/main` @ `7586905` (the docs-only coherence listview correction #189, atop the docs-only landed-state refresh #185, the M4 config-sink race fix #174, bottom-panel Stage 2B-1 #184, the Journey/GPU directory-target ratchet #183, Journey Stage 1a #182 and the previously recorded landed work). **Protocol schema support is `v6..=v21`; the production server-first `Hello` still advertises v20** — two different facts, and #184 landed only the first. The previous snapshot named `0442d78`, and **the recovery floor advances with it**: the check below now requires `7586905` or newer, so a tree at `0442d78` no longer passes. That is deliberate — the floor moves with the base, because a check that accepts an older commit than the declared base passes on a tree the rest of this file does not describe. **Lanes below that name an older base have not been re-based; derive their integration surface from `git diff ..main`.** - On the transfer source, `origin/main` named a release mirror at `d3fa632` and lagged badly. On the current destination, `origin` names the canonical URL. This difference is why all recovery begins by verifying URLs and normalizing `githubsucks` rather than trusting `origin/main`. - The shared desktop checkout contained unrelated uncommitted work. The branches below were prepared in isolated worktrees; never clean or overwrite the shared checkout to recover them. Start on another machine by inspecting its remotes: ```sh git remote -v git remote get-url githubsucks ``` If the second command says the alias is absent, add it; if it prints a different URL, stop and resolve that collision rather than overwriting an unknown remote: ```sh git remote add githubsucks https://github.com/levineuwirth/pmacs.git ``` Then recover current refs: ```sh git fetch githubsucks --prune git log -1 --oneline githubsucks/main git worktree list git status --short --branch ``` The `git log` command must expose `7586905` — the base named above — or a newer intentional main. Keep this threshold and the canonical-base line in step: a recovery check that accepts an older commit than the base it declares canonical will pass on a tree the rest of this file does not describe. If it does not, stop and repair the remote/fetch configuration. ## The CRDT half of the test corpus is dark in CI — NEEDS A LANE - **No branch, no framing yet.** Found while gating #166, then measured properly during the vterm as-framed audit. Deliberately kept out of #166 so a CI change would not arrive after review approval. - **Root cause:** `.github/workflows/ci.yml` never enables the `crdt` feature anywhere — zero hits across the workflow directory. The `test` job runs `cargo test --all-targets --no-default-features --features luajit|lua54`. Every `#[cfg(feature = "crdt")]` test is therefore **not compiled** in CI, not merely skipped. - **Measured, `--list` under CI's exact flags versus the same flags plus `crdt`: 3,176 vs 3,449 — 273 tests dark.** Re-measured at `74301d1` (2026-07-26; at `fe8b8ba` it read 3,170 vs 3,443, the same 273 dark — #176 added six tests, none of them `crdt`-gated). **The number moves with every merge and must be re-measured, not quoted.** #168 reported 3,024 vs 3,288 — 264 dark, 177 in the library — at `1b6a084`; #178 then added CRDT-only generated-buffer coverage, and other lanes landed CRDT tests in between. Per target: | dark | CI | full | target | |---:|---:|---:|---| | 185 | 1,848 | 2,033 | **the library itself** (`src/lib.rs`) | | 21 | 15 | 36 | `m5_5_acceptance` | | 13 | 1 | 14 | `gpu_invocation_acceptance` | | 13 | 1 | 14 | `gpu_initial_target_acceptance` | | 8 | 0 | 8 | `m10_11_acceptance` | | 6 | 0 | 6 | `auto_pair_crdt_acceptance` | | 6 | 0 | 6 | `m10_2_perf` | | 4 | 5 | 9 | `vterm_stage3_acceptance` | | 4 | 0 | 4 | `m10_10_perf` | | 3 | 0 | 3 | `compile_mode_crdt_acceptance` | | 2 | 22 | 24 | `theme_faces_acceptance` | | 2 | 0 | 2 | `m11_5_semantic_acceptance` | | 1 | 14 | 15 | `terminal_copy_mode_acceptance` | | 1 | 9 | 10 | `vterm_stage1_acceptance` | | 1 | 7 | 8 | `statusline_segments_acceptance` | | 1 | 10 | 11 | `gpu_font_acceptance` | | 1 | 0 | 1 | `auto_indent_crdt_acceptance` | | 1 | 0 | 1 | `m10_11_perf` | The rows sum to 273; the table is the whole census, not its head. - **The single worst line is the library.** `cargo test --lib --features crdt` is a REQUIRED local gate in `CLAUDE.md`, and CI has never run it. 185 library tests — the whole CRDT half — are developer-machine-only, and that count grows with every merged branch that adds a `crdt`-gated unit test. - **Ten suites run zero or one test in CI**, including `gpu_initial_target` (#148's entire acceptance, 1/14), `gpu_invocation` (#141's, 1/14), and `a37`, the Vterm Stage 3 real-daemon/real-PTY/real-wgpu path that #135 built specifically because "a decoded-message fixture would prove none of the three fit together". - **⚠ `a37` will report green in the new job without running, unless the job builds `pmacs-gpu` AND sets `PMACS_REQUIRE_GPU=1`.** Measured 2026-07-26 while gating #173. `a37_real_daemon_real_pty_and_headless_gpu_ render_one_terminal_session` derives its sibling binary path from `CARGO_BIN_EXE_pmacs`, and on a missing binary it `eprintln!`s a skip and **returns `ok`**. A fresh worktree running `cargo test --features crdt --test vterm_stage3_acceptance` reports **9/9 in 0.17 s having never run it**; a real run takes ~4 s. Only `PMACS_REQUIRE_GPU=1` promotes that skip to a failure, and `CLAUDE.md` applies that flag to `cargo test -p pmacs-gpu` — a **different package**, so the required local gate does not cover a37 either. The `gpu-render` job already sets the flag, which is what makes fix-shape part 2 sound; state it as a **requirement** of that job rather than inheriting it by luck, because a `crdt` leg added to the plain `test` job would run a37 vacuously. - **`a37` is also load-sensitive, which changes how to read the expected first-run failures.** It passed at `d152120` and failed at that *same commit* twenty minutes later, with a second agent saturating the machine with `rustc` in between; it then failed identically on `d152120`, `04c5ad1`, and the #173 merge commit, which is how #173 established the failure was not its own. The signature is `last_frame_text` all spaces with `rendered_nonuniform_frames` nonzero — frames arrive, content does not. `pmacs-gpu`'s own suite flaked the same way under the same load (201/202, then 202/202 on immediate rerun). **So a red a37 on the first CI run is ambiguous by construction**: before treating it as a real failure, run the same command on the merge base, and prefer serialized execution for this suite over retry-until-green. - **Sort deliberate from accidental before proposing a fix.** Some of the 264 are perf suites that are `#[ignore]`d by default and belong to their own jobs (`m10_2_perf` 6, `m10_11_perf` 1). `m10_10_perf` has **no** `#[ignore]` and no CI job naming it, so it looks accidental. This classification is not finished and is the lane's first task. - **Fix shape, two parts** (the flag combination is verified to work: `--no-default-features --features luajit,crdt` lists 10 vterm Stage 1 tests versus 9 without): 1. a `crdt` leg on the `test` job for the non-GPU suites and the library; 2. the GPU-requiring `crdt` suites onto the existing `gpu-render` job, which already has lavapipe and `PMACS_REQUIRE_GPU=1` — `vterm_stage3_acceptance`, `gpu_invocation_acceptance`, `gpu_initial_target_acceptance`, `gpu_font_acceptance`. - **Expect first-run failures, and budget for them.** These would execute in CI for the first time ever: real PTY timing on CI runners, wgpu under lavapipe, and daemon-socket tests at unfamiliar concurrency. Start ubuntu-only and decide about macOS from evidence. A red first run is the lane working, not the lane failing. - Mitigating fact, verified rather than assumed: #166's three unit pins are **not** `crdt`-gated and do run under CI's exact flags, including the controller-release pin whose only job is catching the plausible wrong fix. - **This lane also owns a `--lib --features crdt` flake, observed and scoped without overclaiming its cause** (inherited from #178's gating, where the terminal lane recorded it). `cargo test --lib --features crdt` failed ~1 run in 5 on `process::tests::setsid_escapee_is_not_reaped_and_teardown_reclaims_readers` — `active_reader_probe` returning `None` at `process.rs:3179` ("live runtime probe"). **Pre-existing and unrelated to #178:** that branch did not touch `src/process.rs` at all, and the test passed 10/10 standalone; the observed failures were during parallel full-suite runs. That localizes the trigger to suite load or interaction, but does **not** distinguish parallelism from another full-suite effect — no serial full-suite bite was run. The leading code-path explanation is the known `drain_until` trap: draining for `Started` also ticks, and a tick can reap the leader before the following `active_reader_probe`. That is an inference from the failure site and control flow, not yet a falsified root cause. Discriminating it belongs here. Two unnamed CRDT failures in #178's round-2 gating are a plausible match but remain **unattributed** — no test names were captured. - **A second standing obstacle for this lane:** `cargo clippy --workspace --all-targets --features crdt -- -D warnings` **fails on `main`** — measured at `74301d1`: seven errors before the build aborts, four in `src/daemon.rs` (`useless_conversion` at 3996, missing doc backticks at 4076, `too_many_lines` 112/100 at 4083, an unneeded `mut` at 4965) and three in `tests/vterm_stage3_acceptance.rs` (`too_many_lines` at 637 and 793, a redundant `continue` at 843). **Treat that as a lower bound, not an inventory:** Clippy abandons the remaining targets once one fails, and a run on an older tree surfaced a further doc-backticks error in `tests/auto_indent_crdt_acceptance.rs:42` that this run never reached. The standing gate list runs Clippy without `crdt`, so these lints have never been enforced. Any CI job that compiles the `crdt` targets has to fix them first or it will be red on arrival. ## Bottom-panel lane (Arc 7) — 2B-2 MERGED; 2B-3 IS NEXT Stage 1, the Stage 2 framing, Stage 2A, Stage 2B-1, and **Stage 2B-2 are all on `main`**. Framing revision 5's three-way split of 2B was explicitly approved on 2026-07-27; revision 6 records PR #184's review correction. **2B-2 — the daemon panel projection and epoch machine — landed as [PR #187](https://github.com/levineuwirth/pmacs/pull/187)**, one review round of five findings on top of the implementation, 12/12 green, 22/22 mutations biting. Its durable lessons are in `docs/agent-handoff.md` §1; what remains below is the 2B-3 plan. **2B-2's boundaries, restated because they are easy to overrun:** the production `Hello` stays at v20 and `panel_capable` stays `false`. The slice is dark/test-only capability exactly as 2B-1 was. Compatible v21 activation, the GPU band, and the negotiated capability flip are all 2B-3's, and 2B-3 may **not** simply change the unsolicited `Hello` to 21. - **What PR #187 shipped, dark by construction:** the semantic daemon's `FrontendCellGeometry` epoch machine; one reconciled panel grid derivation; `PanelFrame::{Present, Absent}` projection on both document and terminal semantic paths; stable presentation epochs; resize and pointer validation against the live window/buffer/epochs; the panel's own statusline context; and pre-drain semantic panel-terminal resize. It does not add the GPU consumer or enable the capability. - **Review round 1 closed five findings plus one sweep result at `3ecb03d`.** The wire-area clamp became durable hide state; a stale same-buffer reopen can no longer retain input authority; semantic panel terminals resize before child drain; `NoMessage` retains a published band baseline while `Invalidated` clears it; wheel activation follows the terminal-only focus rule; and legally wide panels clamp their PTY content without disappearing. - **Review round 2 closed two findings at `bfaaf2b` plus this ledger commit.** Side affinity can replace the buffer while preserving the `WindowId`, so retained panel statusline segments are now keyed by the full `(WindowId, BufferId)` presentation. Every authoritative `Absent` also clears that baseline, including duplicate-suppressed `Absent`, so a later `Present` under `NoMessage` cannot resurrect peer state that was already cleared. Two acceptance tests bite those exact transitions. This lane and `docs/agent-handoff.md` now name the open PR, current landed base, checkpoint, and 2B-3 ordering instead of calling 2B-2 merely “next.” - **Round-2 verification at code checkpoint `bfaaf2b`:** formatting and strict workspace Clippy; library **1,863 passed + 3 ignored** default and **2,048 passed + 4 ignored** CRDT; bottom-panel Stage 1 / 2A / 2B-1 / 2B-2 **46 / 17 / 16 / 28**; statusline **8 CRDT**; semantic routing **2 CRDT**; M4 **121 passed + 3 ignored + 1 filtered**; required GPU **202/202**; isolated-config full workspace sweep; and `git diff --check`. The first workspace sweep had one GPU rendering failure in `failures_and_display_math_render_as_source`; that test had passed in the immediately preceding required-GPU run, passed alone, and the complete workspace rerun passed. Real-daemon and managed-attach cases were rerun outside the tool sandbox after its local-socket policy produced `Operation not permitted`; the authoritative reruns passed. - **Cross-machine recovery (fresh clone):** ```sh git fetch githubsucks --prune git switch --track -c bottom-panel-stage2b2 githubsucks/bottom-panel-stage2b2 git rev-parse HEAD ``` #187 has landed, so `githubsucks/main` already contains this work and the branch is retained only for provenance. Start 2B-3 from `main`. - **Stage 2B-1 MERGED as #184** (`main` @ `6bee09d`, 2026-07-28; all twelve checks green on the reviewed head `5539b6e`; two review rounds plus a gate-found follow-up). Branch `githubsucks/bottom-panel-stage2b` and worktree `../pmacs-bp-stage2b` are retained and carry nothing unmerged. Durable facts — the schema-support-versus-advertisement split, the shared `wire_grid` boundary, authoritative `Absent`, and the two epochs — are in `docs/agent-handoff.md` §1 per rule 3, not here. - **What 2B-1 deliberately did not do**, because 2B-2 and 2B-3 must not re-litigate it: no producer, no consumer, no capability change. `panel_capable` is still `false` for every semantic session, so the journey grade is unchanged and every shipped v20 client remains attachable. - **2B-3 inherits a hard constraint from 2B-1's review**: it owns a *compatibility-preserving* v21 activation mechanism and may **not** simply change the unsolicited `Hello` to 21. The handshake is server-first, so that one-line change locks out every shipped v20 frontend before it can even send an `AttachRequest`. - **Two review rounds, and what each cost.** Round 1: `PanelFrame` needed an explicit `buffer_id`, the transport ratchet had to drive the real attach path rather than a detached codec assertion, and shared grid bounds needed one validator. Round 2: the server-first `Hello` made the advertised v20↔v21 compatibility one-way; `COHERENCE.md` and the handoff still named only v20 schema support; framing §9 named a nonexistent aggregate 2B suite instead of the three exact slice suites; and the panel plus copied-terminal "one byte over" fixtures were actually two bytes over. - **The full gate — not review — found two version-ladder omissions and one probe contradiction.** The statusline and Vterm Stage 3 ladders still pinned v20 and rejected v21. Separately, Vterm Stage 3's headless probe exited its loop as soon as resize plus two nonuniform composites were observed, while its acceptance later required the PTY child's `VTERMROW` output in the final frame; the v20-compatible handshake made that scheduling race deterministic, so the report sampled a blank frame. The probe now waits for the exact child-output observation its acceptance asserts. - **The probe fix then leaked its own fixture, and that is the reusable lesson.** The generic runner hard-coded the *producer* fixture's `VTERMROW` breadcrumb, so the CAT input fixture could satisfy every assertion yet never satisfy the loop exit — it waited out the 20-second safety deadline and passed on the deadline. Producer probes now name their own required frame text while input probes finish on the latched echo, and the report exposes `completion_observed` which **both** paths assert, so a deadline-driven pass cannot hide a stall again. - **Final verification on the reviewed head:** `cargo fmt --check`; strict workspace Clippy; library **1,849 passed + 3 ignored** default and **2,034 passed + 4 ignored** CRDT; bottom-panel Stage 1 / 2A / 2B-1 **46 / 17 / 16**; folding Stage 2 **48**; GPU font **11**; statusline **8 CRDT**; m11_5 semantic **2 CRDT**; GPU initial target and invocation **15 / 15 CRDT**; the handshake consumers m5_5 / m5_7 / mode-system wiring **36 / 7 / 1 CRDT**; Vterm Stages 1 / 2 / 3 **10 / 6 / 9 CRDT**, including the required real daemon + real PTY + real wgpu probe; M4 **121 passed + 3 ignored + 1 filtered**; required GPU **202/202**; the isolated-config one-invocation full workspace sweep; and `git diff --check`. - Retained as classification rather than erased: the first required-GPU pass was **201/202** on `a_fraction_draws_rule_pixels_between_its_operand_rows`, a rendering test structurally outside a protocol-only diff, which passed immediately in single-threaded isolation and **202/202** on the mandatory complete rerun. Separately, library and Vterm attempts *inside the restricted tool sandbox* produced `Operation not permitted` failures in socket-based attach tests; the authoritative outside-sandbox reruns passed. - **Ordering for the rest of the arc is fixed:** 2B-2 branches from landed `main`; 2B-3 branches only after 2B-2 lands; Stage 3 (the adopter default flip) last. Each slice starts fresh from landed main. - **Stage 2A MERGED as #177** (`main` @ `0a3fcd1`, 2026-07-26, all twelve checks green at `8424172`, three review rounds). Branch `githubsucks/bottom-panel-stage2a` and worktree `../pmacs-bp-stage2a` are retained and carry nothing unmerged. Five commits: the classified census routing, the painter extraction + acceptance, the lane record, then the round-1, round-2 and round-3 review fixes. **No protocol change; no behavior change for any frontend today** — with `panel_capable = false` for semantic sessions, `primary_document_window` returns `view.active` in every existing configuration, so this is seam adoption that becomes load-bearing in 2B. - **Stage 2A verification on its merge result:** `cargo fmt --check` clean; strict workspace Clippy clean; **1,832 default + 2,015 CRDT** library tests; `bottom_panel_stage2a_acceptance` **17**; bottom-panel Stage 1 46; statusline segments 8 CRDT; m11_5 semantic 2 CRDT; GPU initial target 14 CRDT; terminal config 12 CRDT; vterm Stage 1/2 10 / 6; folding Stage 2 48; M4 121; required GPU 202; `git diff --check` clean. - **Every routed producer is now pinned at a seam its production caller uses, and each pin was falsified by revert**: #1 follow, #2 lazy CRDT upgrade, #3 `CursorByte`, #5 decorations, #7 `Viewport` (aligns without focusing), #8 `Pointer` (aligns and focuses), #9 the terminal-context gate, #12 statusline, #21 the publication filter, plus the focus-class negatives. #1/#3/#21 required extracting three named helpers, because their only production caller is `dispatcher_loop`, which no test can drive. - **Three lessons about the TESTS, not the code, all from review:** (a) a *structural* test comparing the two authorities directly does **not** catch a misrouted consumer — only consumer-level assertions do; (b) a daemon-path test must `register_session` or the event is dropped at the uninstalled-session check before reaching the code under test; (c) a discriminating fixture must make the two routings DISAGREE — comparing two non-terminal buffers, or two windows with no selection, yields the same answer either way and proves nothing. Round 2 found four of my own pins vacuous by exactly these shapes, and round 3 found two more problems of the same family: a pin placed at a HELPER while production called it from a producer (reverting only the producer's call site left every test green), and a socket-pair assertion whose blocking read made a regression HANG instead of fail. Both now assert at the producer, with read timeouts on every read. - **Review round 1 closed: 4 P1 + 2 P2, all real.** The P1s were a stale-`Pointer` focus steal (the failed-alignment arm returned the window, so #8's activation focused it before `dispatch_pointer` rejected the buffer), the missing A2A-2 two-context fan-out, a census suite that asserted the AUTHORITY rather than the CONSUMERS, and the missing main integration. **Two of the new pins were themselves vacuous on the first attempt** — the dispatcher test passed because an unregistered session is dropped at `daemon.rs:1962` before reaching the aligner, and the painter test was a fixed-point check that survived deleting `text_view.render`. Both now fail under their own bite. - **`vterm_stage3_acceptance::a37` is a pre-existing flake here**, not a Stage 2A regression: measured **6/8 failures on the base commit** and **7/8 on the branch** in matched isolated samples. It needs a real daemon + real PTY + headless GPU and is documented load-sensitive. It also silently returns `ok` unless `pmacs-gpu` has been built, and is `crdt`-gated so CI never runs it at all. - **Two suites are dark without `--features crdt`**: `m11_5_semantic_acceptance` reports **0 tests** and `gpu_initial_target_acceptance` reports **1** in the default config. Both are semantic-census suites, so Stage 2A must be gated with the feature on or its most relevant coverage never executes. - Stage 1 merged as **#155** (`main` @ `e745068`, 2026-07-24, after two review rounds). No protocol change. Durable substrate facts live in `docs/agent-handoff.md` §1; the two round lessons are in §5. - Landed-docs follow-up merged as **#156** (`main` @ `d152120`, 2026-07-25). - **Stage 2 framing: `docs/bottom-panel-stage2-framing.md` revision 6** is on branch `githubsucks/bottom-panel-stage2b` (revision 5 is commit `56301ed` there), worktree `../pmacs-bp-stage2b`. Revisions 1–4 remain on `githubsucks/bottom-panel-stage2-framing` (head `4fbd47f`, four framing commits, revision 4 at `49757e5`). Round 1 closed 2 blocking + 3 high; round 2 closed 1 blocking + 2 high + 1 medium and decided both open items; round 3 closed 1 blocking + 1 high + 1 medium. No open items remain. Revision 5 adds no decision; it records the approved 2B-1/2B-2/2B-3 implementation split. Revision 6 corrects the server-first compatibility contract, durable protocol claims, exact acceptance-suite names, and `limit + 1` fixture. The parent framing `docs/bottom-panel-framing.md` (rev 4) remains authoritative, **including its acceptance criteria 37–55**. - Retained, carrying nothing unmerged: branch `bottom-panel` and worktree `../pmacs-bottom-panel`. - **Stage 2 ships as four serial implementation slices**, each landing before the next branches: **2A** = classified §1.3 census routing + `paint_frame` per-window painter extraction (with the active-window auto-scroll preparation), no protocol change; **2B-1** = reserved protocol schema **v21**, with production advertisement held at v20, (`InstanceMessage::PanelFrame` plus `FrontendEvent::{FrontendCellGeometry, PanelResizeRows, PanelPointer}`, gated both directions, each extended enum byte-pinned on its own previous final variant); **2B-2** = daemon panel projection and epoch machine; **2B-3** = compatible v21 activation, the GPU band, and the negotiated `panel_capable` flip. Stage 3 is the adopter default flip. - **Correction — this entry previously mis-stated the census contract.** It is **not** "route every consumer through `primary_document_window`". Q#BP14 classifies the 23 reads into four classes and routes only the **Projection** class that way; focus/input (#13–#15, #23), focus chrome and surface-routed (#16–#19), and focus/session (#20) keep their own authorities. Rerouting them would break remote-op validation and application, `DispatchIdle`, presence, focused search/menu/completion routing, and terminal bell ownership. The Stage 2 framing carries the full table. - **The GPU document bottom is three boundaries, not one.** `text_area_bottom` (`pmacs-gpu/src/main.rs:8490`) is today `status_band_top`, `geometry_capacity_bottom`, and `document_text_bottom` at once. Once a band is installed they diverge: the status chrome must stay pixel-identical at the physical window bottom while document consumers move. A blanket rewrite of that helper moves both together and passes an "everything moved" assertion, so the Stage 2 criterion asserts **both directions in one scenario**. The census is 20 production sites (8 status-owned, 12 document-owned) + 1 definition + 8 test sites = 29 matches; the framing carries the per-site table. The three easiest to misclassify are document completion `:6140`, minibuffer candidates `:7351`, and edge scrolling `:8561` — each with its own visible symptom. - **Folding Stage 3 and this arc's Stage 2 both touch the semantic projection.** Whichever is framed second re-scouts the other's landed state. ## Folding lane (Arc 6) — Stages 1 and 2 MERGED; Stage 3 (GPU) is next Both shipped stages are on `main`; nothing in this arc is in flight. Stage 3 has **no branch and no framing yet**. - Stage 1 (headless fold engine) merged as **#142**, Stage 2 (grid/daemon collapse) as **#149** — both under "Closed since the last snapshot". - Retained, carrying nothing unmerged: branches `folding` / `folding-tui` and worktrees `../pmacs-folding` / `../pmacs-folding-tui`. The framings `docs/folding-framing.md` (rev 5) and `docs/folding-stage2-framing.md` (rev 4) are the approved artifacts Stage 3 re-scouts against. - **Stage 3 (GPU) obligations, already named by the framings** — the starting point for its own framing doc: GPU collapse at TUI parity; caret/hit-test fold-awareness; the `BufferSnapshot` **fold-mirror clear** (parent R2-4 — without it, empty-after-revert diff suppression leaves stale folds on the GPU, the same trap class as #120); CRDT-origin and GPU-optimistic interactive unfold (parent R2-3); and flipping `FrontendView.fold_projection` to `true` for semantic frontends, which Stage 2 deliberately left `false` (Q#FD21). ## Generated-buffer immutability framing lane — PR #188 OPEN, PROPOSED - Portable branch: `githubsucks/generated-buffer-immutability`; worktree `../pmacs-generated-immutability`. **PR #188**, base `main`, forked from `githubsucks/main` @ `ad41cf1`, **integrated through `5e186c7`** — #189 (clean), then #186 and #171 (`docs/active-work.md` conflict), then #187 (the same file again, after it removed the two landed framing lanes), #192 at merge commit `76cfaac`, and #193 (`docs/active-work.md` conflict again) after revision 7's first push. Revision 6 was reviewed at head `55c3061`; revision 7 closes that round. Framing only — `docs/generated-buffer-immutability-framing.md`, revision 7, plus this lane. **No runtime code, no protocol change.** - **PROPOSED — six review rounds closed (thirty-two findings, twenty-two P1, ten P2). Not approved. Do not implement, do not merge.** - **Stage 1 implementation is PR #191, open. The boundary is explicit and has already been needed twice:** #188 owns the **acceptance contract**; #191 **adopts** criteria and may not restate, narrow, or reclassify them. Where an implementation finds a criterion impossible, the framing is revised and re-approved first. The **selection-anchor clamp** is Q#GB6's to specify and #191's to implement, and both must describe the same rule. Round 5 found #191 had locally restated Stage 1 criteria 5 and 7 while #188 still carried the originals — a divergence neither lane's gates can catch, because each is green against its own description. - **Round 5's two corrections that other lanes need:** - **`Window::Selection::anchor` is an unclamped byte position and it PANICS**, not merely dangles. `Window::region` (`src/window.rs:472-479`) clamps neither endpoint; `region_bytes` (`src/editor_core.rs:4184-4191`) hands the result to `Rope::slice`, which asserts at `src/rope.rs:145`. Reproduced by #191: select 0..30, shrink the buffer to two bytes, copy. The fix is **clamp-or-clear** in **both** `notify_buffer_edit` (`src/editor_core.rs:1836-1850`, clamps nothing today) and `rebuild_views_for` (`:1865-1882`, clamps cursor and view_top but not selection) — and the rule is already in the tree for the terminal's own selection type at `src/terminal/view.rs:715-721`. A stale anchor also reaches the presence broadcast (`src/presence.rs:122-123`). - **`Buffer`'s `on_edit` broadcast stops at the first error in FOUR places**, so a view later in attach order keeps pre-edit offsets: `src/buffer.rs:1288` (`apply_edit` / `apply_edit_skip_intercepts`), `:1250` (the no-op early-return arm), `:1033` (`apply_remote_crdt_op` — the replica import path), and `:1543` (`broadcast_on_edit`, i.e. **undo and redo**). Any lane relying on a buffer-attached view staying in step with the rope is affected. - **What it frames.** The class-wide half of the `set_generated_contents` invariant that `docs/agent-handoff.md` §4 and `COHERENCE.md` §14 both record as unfinished: `Buffer::undo` gates on `ensure_writable()` (`src/buffer.rs:1302`) and never consults the intercept chain, so the `add_intercept`-plus-`bypass_intercept` idiom leaves the rope writable and every affected buffer emptiable. All five families were reproduced by execution at `ad41cf1`, not inferred; the transcripts are in the document's §0 and §2. - **Recommended primitive:** `Buffer::apply_generated_edit(op)`, exposed as a `{ generated = true }` option on the existing Lua mutators, with `set_generated_contents` reimplemented as its whole-buffer wrapper. It is the only candidate in which the buffer is never observably unlocked. **Revision 3 pins the transaction** (framing §3.4): its **own** `run_buffer_edit` arm — **not** the bypass arm, which calls `begin_edit`, which calls `ensure_writable` first (`src/buffer.rs:725`) and would refuse every generated write to a locked buffer — one `&mut Buffer` method with every exit named. **Revision 4 replaces revision 3's cleanup predicate.** Cleanup is driven by an explicit five-variant `GeneratedOutcome` reported by the apply, **not** inferred from `revision`. Inferring it was wrong three ways: a successful no-op (`src/buffer.rs:1245-1253` returns `Ok` without bumping `revision`) kept history the contract forbids; a CRDT mid-transaction failure happens **upstream of `revision` entirely** (`:1140-1163`), so it was neither cleaned nor detected; and the unconditional relock **locked a fresh buffer that was never successfully written**. `NoOp` clears, `Rejected` restores the entry lock state, `Diverged` clears nothing and surfaces. **Revision 5 keeps the five outcomes but preserves the `Edit` in `AppliedThenFailed { edit, error }`: the borrow-free Lua finisher fans it out to window caches and replica mirrors before returning the error.** Collapsing to `Result` inside `Buffer` was too early. **Revision 6 replaces the delete→insert enumeration with a `crdt_mutated` flag**, because `export_updates_since` can fail after every successful CRDT op shape, and changes all four `Buffer` broadcast loops to continue-and-retain-first-error. **Revision 7 installs quarantine at common divergence detection before generated or ordinary callers map the outcome.** The monotonic poison blocks all three CRDT snapshot exporters, daemon-origin queueing and every later owner-generated write; criteria 16c and 16d pin the containment boundary. Repair remains deferred. - **Two stages, two PRs.** Stage 1 — listview ownership fix **plus its identity-routing fix in the same PR**, dired and listview adopting the shipped primitive, the window-coordinate clamp, and the fold decision. Stage 2 — the new primitive, compile's nine write sites, the search panel's four, compile/search ownership + routing, the path-backed refusal plus `mark_clean`, and the terminal-only `identity_protected` guard. **No Lua unlock ships.** - **Nine facts from this lane that other lanes need before it merges:** - **`bypass_intercept` is the wrong inventory key.** It misses `*buffer-list*`, `*help*` and `*workers*`, which are generated with plain writes and no intercept at all. `docs/agent-handoff.md` §4's four-row table inherits that blind spot — **and undercounts by one**: `src/help.rs:354` `replace_help_buffer` is a fifth writer mechanism (own find-or-create, `Buffer::apply_edit`, own `mark_clean`) writing the **same** `*help*` buffer as `default.lua:1239`, which does not mark clean. Two owners, one buffer, two copies of the name constant across the FFI boundary. - **`COHERENCE.md` §14's listview consumer list was wrong and is now FIXED** — PR #189 (`main` @ `7586905`) landed exactly the correction this lane measured. Nothing owed. Recorded so it is not re-asserted. - **Three writers adopt any buffer sharing their name** — `listview.lua:95`, `compile.lua:263`, `default.lua:861-868` — against a rule the tree already states at `terminal.lua:300-305` and implements at `dired.lua:476-504`. Measured: a foreign `*references*` is clobbered and left permanently un-editable, and a `pmacs.compile.run` that **raises on validation** still leaves a foreign `*compilation*` un-editable. Today `M-x buffer.undo` — this arc's bug — is the only recovery, so the arc must not lock these buffers before fixing ownership. - **Disambiguating a name breaks the sites that read one.** Census in framing §2.10: 19 units across 14 grep lines, two genuinely broken. `listview.lua:44`'s `panels[d.name]` (written under the *requested* name at `:97`, read under the *actual* name) has **four** consumers, and the fourth — `listview.open:118-123`'s never-capture-a-panel guard — fails **inverted and silently**, capturing a panel as its own `q` target. `compile.lua:216`'s `is_generated_buffer` has two. `compile.lua`'s `slots` is **not** affected: keyed by a module constant at both ends, with `slot_for_buffer` id-based. - **`read_only` is one boolean serving THREE policies** (framing §2.11): the generated lock; terminal identity (`src/terminal/session.rs:305`); and, as a *reader*, `src/lua_bindings/fold.rs:313`'s "is this a document buffer" test, pinned by `tests/folding_acceptance.rs:570`. Consequence for any lane: **locking a buffer silently disables `pmacs.fold.fold` on it**, with the status `fold rejected: not a document buffer`. - **The SHIPPED `set_generated_contents` can overwrite a live terminal identity buffer.** It does `self.read_only = false` unconditionally (`src/buffer.rs:546`), so it lifts a lock it did not install, writes, and re-locks. Present on `main`, untested, unframed anywhere before revision 4. Refused in Stage 2 by the `identity_protected` field — an **intrinsic** flag marked once by a crate-private monotonic `mark_identity_protected()` in `TerminalSession::open`, never written by `set_read_only`. Revision 3 tried to infer this from the lock's provenance instead; that broke the lift-and-restore idiom at `tests/terminal_copy_mode_acceptance.rs:578-584`, and the general lesson is that a **derived** fact must be maintained by every mutation of what it derives from — and `set_read_only` is `pub`. - **`acc16e` is `crdt`-gated and is the only shipped consumer of the lift-and-restore idiom.** `cargo test --test terminal_copy_mode_acceptance` **without** `--features crdt` never compiles it, so a green run of that suite proves nothing about the seam. Any lane touching `read_only` semantics must run it with the feature and confirm `acc16e` is in the count. - **`identity_protected` is not generated-lock provenance.** Revision 4 tried to use “not a terminal identity buffer” as proof that the generated primitive installed the lock; it is not. Revision 5 therefore removes `pmacs.buffer.unlock_generated` from the arc entirely. Wdired's future generated→editable transition remains dired Stage 3 work and must be owner-specific or use the eventual lock-policy enum. - **The CRDT `Replace` mid-transaction divergence is real and unowned.** `crdt.delete` then `crdt.insert` (`src/buffer.rs:1140-1163`); if the first succeeds and the second fails, the code's own comment says "the CRDT is mid-transaction ... This is an invariant violation." It reaches `apply_edit` and `apply_edit_skip_intercepts` today and is reported as an ordinary `CrdtRejected`, so nothing distinguishes it. This lane names and contains it; **repair is deferred and unowned.** Revision 6 makes classification total with a `crdt_mutated` flag: any later error, including `export_updates_since` after `Insert`, `Delete` or `Replace`, is `Diverged`. Revision 7 installs a common monotonic poison before either generated or ordinary API mapping, blocks `initial_target_snapshot`, `send_buffer_snapshots`, `export_buffer_snapshot` and `queue_daemon_origin_crdt_op`, and rejects every later owner-generated write with `CrdtQuarantined`. Criteria 16c and 16d fault-inject the complete boundary under `cargo test --lib --features crdt`; there is no public fault-injection API and no four-variant fallback. - **Overlap warning.** Stage 2 touches `src/lua_bindings/mod.rs`'s buffer mutator bindings and `src/buffer.rs`. Do not run it concurrently with the `apply_resource_op` lane or the bottom-panel 2B work without assigning those files to one lane first. The framing itself touches neither. - **Cross-lane, settled, not re-decided here.** #186 owns the urgent pre-filesystem refusal for synchronous `apply_resource_op`; #171 later owns full post-delete lifecycle reconciliation, including the async race where a buffer becomes modified after dired dispatch. **#171's Q#DR25 is deferred INTO this lane** — confirmed against #171 revision 7 (`fd7ae37`), which states that dired's listing becoming immutable is "owned by the `generated-buffer-immutability` lane" and that "Stage 2 does not implement it, does not gate on it, and carries no acceptance for it." This lane's Stage 1 claims that work. **Neither ordering conflicts**: #171 Stage 2b changes `paint`'s callers, this lane changes `paint` itself. Revisions 1 and 2 of this framing never mentioned Q#DR25 at all; revision 3 §9b records it. - **Re-measured at `ad41cf1` while scouting: 276 CRDT-dark tests** (3,251 vs 3,527), by `cargo test --all-targets --no-default-features --features lua54[,crdt] -- --list | grep -c ': test$'`. Recorded here because the section above asks for exactly that and warns against quoting a stale figure; it does not replace that section's per-target census, which was not re-derived. ## Parked lane: kill-ring browser + persistence - Portable branch: `githubsucks/kill-ring-browser` - Parked framing head: `503c489` - State: framing only, revision 2; no implementation and no PR. - Status: explicitly parked by the user on 2026-07-20. - Its original scout was based on `0efb5cd`. The preserved framing marks this ground truth stale and requires a complete re-scout against the then-current `githubsucks/main` before implementation. - Compile-mode has merged since the original scout, so old “compile-mode in flight” keybinding/touch-set assumptions are not authoritative. Recovery worktree, only when the user un-parks it: ```sh git worktree add --track \ -b kill-ring-browser \ ../pmacs-kill-ring-browser \ githubsucks/kill-ring-browser ``` ## Documentation lane — STALE, AND ITS DISPOSITION IS UNDECIDED > **Measured 2026-07-28, not inferred:** `githubsucks/handoff-2026-07-20` > is at `c11d7e7`, **1 commit ahead of `main` and 320 behind**. Its > whole diff against `main` is four documentation files > (`docs/active-work.md`, `docs/agent-handoff.md`, > `docs/roadmap-2026-07.md`, `docs/vterm-framing.md`), every one of > which has been rewritten repeatedly since by the landed-doc PRs > #156/#168/#169/#172/#180. Rule 4 removes a lane on merge *or > abandonment*, and this one looks abandoned in substance — but "looks > abandoned" is not the same as a decision, and no PR was ever opened > for it. **This snapshot deliberately annotates rather than deletes: > whoever confirms the branch carries nothing unique removes the > section.** The bullets below are its original claims, preserved as > written and now unverified. - Portable branch: `githubsucks/handoff-2026-07-20` - Carries synchronized `AGENTS.md` / `CLAUDE.md`, this ledger, the durable handoff refresh, and the keybinding reference correction. - It changes no runtime code. - Review and merge this documentation branch separately; it must not be folded into a feature framing branch. - Now also absorbs both landed arcs: Vterm Stage 1 (#126) and the config registry (#127). Canonical `main` is merged into it up to `2e37c04`, so its diff against `main` is documentation only. ## Closed since the last snapshot - **Terminal configuration + copy mode arc — BOTH STAGES MERGED, lane removed.** Stage 1 **#173** (`main` @ `cf54270`, one review round) and Stage 2 **#178** (`main` @ `fe8b8ba`, **four review rounds**, twelve checks green on head `1b44c69` — verified by `head_sha`, not by the check summary), both 2026-07-26, both with no protocol change. Approved framing: `docs/terminal-config-and-copy-mode-framing.md` rev 4, committed as the first commit of Stage 1's branch; its Q#TC6a carries a superseded-in-part box rather than a silent rewrite. Durable facts moved to `docs/agent-handoff.md` §1 (the arc bullet) and §4 (the `set_generated_contents` invariant) per rule 3 below, and to `COHERENCE.md` §14. **Stage 2 ships eight of nine criteria and the missing one is named** — criterion 17 needs a real GPU frontend, so it waits on the `a37` footing; the handoff records what it must assert. Branches `githubsucks/terminal-config` and `githubsucks/terminal-copy-mode` with worktrees `../pmacs-terminal-config` and `../pmacs-terminal-copy-mode` are retained. The gate-run flake found while gating #178 moved to the CI `crdt`-coverage lane above, which owns its discrimination. - **Dired Stage 1 (the directory view) — MERGED as #165** (`main` @ `c8ec8f3`, 2026-07-25, after one review round). pmacs has a directory surface: `C-x d` / `C-x C-j`, one read-only buffer per directory named `*dired:*`, a `dired` major mode carrying `RET`/`f`, `^`, `n`/`p`, `g`, `q`, `s`. No wire change (v20). The Rust is two things — a per-entry-tolerant `read_dir` (Q#DR6), which had to be Rust because `read_dir_blocking` fails a whole listing on any of five per-entry conditions and a tolerant wrapper cannot be written in Lua at all, and `normalize_buffer_path` going `pub` as `pmacs.path.canonicalize` (Q#DR2's preferred end state, so no Lua mirror exists and Stage 2 owes no mirror removal). The frozen m8_1/m8_2/m8_3 counts are unchanged, which is the additivity gate. 15 claims bite-verified; one came back VACUOUS (acceptance 3c cannot pin descent routing — dired holds focus in its own panel, so dedication is the only discriminator) and is documented at the assertion rather than relabelled. Its branch (`dired-stage1`) and worktree (`../pmacs-dired-stage1`) are done; the abandoned `dired` branch (`ffdd642`, `../pmacs-dired-arc`) was superseded by a fresh cut and carries nothing unmerged. **Stage 2 (marks and operations) and Stage 3 (wdired) each still need their own framing**, and the frozen fixture shrinks after Stage 3. Durable substrate facts and both new ops lessons live in `docs/agent-handoff.md` §§1/5; the implementation notes are `docs/dired-framing.md` §0, S1-1…S1-12. Two named forward items for Stage 2: `apply_resource_op`'s rename rebind is exact-PathBuf-equality, first-match-only, looked up with the raw path while stored paths are normalized — so a directory rename strands every buffer under it, and `pmacs.fs.rename` has zero production callers, so it can be fixed at the primitive; and Q#DR5's seam is the main-thread drain `AsyncRuntime::tick`, not `_take_result`, where rename settles as an undifferentiated `ReplyKind::FsUnit` and so must be keyed on `JobKind::FsRename`. - **GPU terminal input (the double terminal-layout sync) — MERGED as #166** (`main` @ `b889873`, 2026-07-25, one review round, all twelve checks green after a macOS PTY-timing rerun). The dispatcher applied **both** terminal-layout syncs to **every** attached frontend; a semantic session satisfies both conditions, so its PTY was resized twice per tick forever and the child took a `SIGWINCH` storm that made a GPU terminal untypable while output still flowed. `sync_terminal_layout` is now split into a frontend-kind-neutral half (panel reconcile + controller liveness) and a grid-only geometry half, with the loop body extracted to `sync_terminal_layouts_for_tick` so the exclusivity is structural. No protocol change (v20). Durable lessons are in `docs/agent-handoff.md` §5; the framing (`docs/gpu-terminal-input-framing.md` rev 2) carries three falsified hypotheses, the two-pre-image bite matrix, and two named out-of-scope items (Q#GT5 interactive-shell echo on a raw PTY, which reproduces in-process and so is not the GUI/TUI asymmetry; and a geometry change appearing to clear the visible screen, which reproduces pre-fix). Branch `gpu-terminal-input` and worktree `../pmacs-gui-term-input` retained. **Its landed-doc pair MERGED as #168** (`main` @ `1b6a084`, 2026-07-26): #166 recorded as landed, the CI `crdt`-coverage gap measured (**264 tests dark workspace-wide**, 177 in the library — a reading taken at `1b6a084` and kept here only as history. **The CI `crdt`-coverage lane above is the authority for the live figure**; do not quote this one forward), the vterm audit corrected — "only 3 of 9 acceptances drive a real daemon" was optimistic; without the frontend binary the honest number is **2** — and the a37 findings folded into the coverage lane. - **Inline-math slice — MERGED as #158** (`main` @ `5aa9044`, 2026-07-25). Detect → parse → layout → draw for `$…$`, entirely inside `pmacs-gpu`, no protocol change. Verified by the user's manual pass on a real paper after the landing. What is worth carrying forward: - **The v0 subset is 34 Greek symbols, sub/superscript, and `\frac`.** An unsupported command fails the **whole span** back to source, so on a real document most inline spans still show LaTeX. Widening the symbol map is the highest-value next increment — ahead of display math, which is also deferred. - **A stale frontend binary is invisible from the source tree.** The slice lives only in `pmacs-gpu`, so after it merged the feature was absent until `cargo build --release -p pmacs-gpu` and a client restart; the daemon needs neither. Diagnose with `strings` on the binary (`Latin Modern Math`, `MathBox`) rather than by re-reading the checkout, which was already current. - **Main was integrated three times in one day** (`8c86d34`, `46a1b8f`, `b889873`), merged not rebased to preserve review anchors. Two conflicts, both this ledger and nothing else. **The dangerous case was the one that did NOT conflict**: #166 auto-merged into `pmacs-gpu/src/main.rs`, the file this lane rewrites, because the two edits sat in different regions of it. Decide whether to integrate from the shared-**file** set, never from whether git complained. - **Integration was proved by test-count reconciliation**, not by a green run: predict what the other side adds, then check the deltas. GPU 199→202 matched `e547a90`'s 3; later lib 1,826→1,829 and CRDT 2,003→2,006 matched #166's 3, with GPU unchanged because #166 adds none. Suites 91→92 was #161's new binary. - **Why the branch had no CI for a day**: a conflicting PR builds no merge ref, so no `pull_request` run is created. The ledger previously recorded this cause as unidentified; it is not. Check `mergeable` and confirm a run exists for the current head SHA. - **`m4_5_basedpyright` has no timeout and hangs forever**, parking a `--workspace` sweep (observed 2h26m at 38 of 92 suites). It is **intermittent**, so an earlier clean sweep proves nothing. Sweep with `cargo test --workspace --no-fail-fast -- --skip basedpyright` and judge progress by whether the suite count advances. - Named v0 approximations: the peer-caret half of acceptance 14 is pinned at the mapping level, not pixels; a soft-wrapped spacer draws its box whole at the first run's origin; the fit budget reads the bundled code face even under a custom `set_font` family. - **Bottom panel Stage 1 — MERGED as #155** (`main` @ `e745068`, 2026-07-24, after two review rounds). Window placement, window parameters, TUI side windows, the divider, and the adopter `display` opt-in, with no protocol change. Both rounds found the same class of defect and are worth keeping: - **Round 1**: the Q#BP6 side-window split guard had *no production caller* — `C-x 2` still reached plain `split_active` — and survived because the acceptance test called the core method directly. - **Round 2**: Q#BP7's terminal growth re-arm had *never been implemented*, and the assertion meant to pin it (`at_bottom`) is a geometric readout that a still-anchored view satisfies; the anchor assertions beside it compared `""` with `""` because the PTY fixture emitted LF-only output. - **Post-round-2 self-review**, caught by CI going red on all four Test jobs: resolving `pmacs.window.buffer()`'s no-argument arm through the acting frontend made a total function partial, and six runtime modules silently dropped operations (`kill_ring_acceptance` 30/30 → 25/5). Fixed in `9110f9f` before merge. - Gating fact found on the way: **the workspace sweep must run with an isolated `XDG_CONFIG_HOME`**, because the real user `init.lua` installs a local package and the losing race leaks a status message into painted-frame comparisons. There is also a latent pre-existing `main` bug in the buffer CRDT undo path, unrelated to this arc. - `compile_mode_acceptance` is load-sensitive under default parallelism (~1 run in 3, a different test each time); verified pre-existing by swapping in `main`'s `compile.lua`. It is 67/67 at `--test-threads=1`. - **GPU initial target — MERGED as #148** (`main` @ `0dd16a5`, 2026-07-24, after two review rounds). `pmacs --gpu [--socket …] FILE` opens a target before the GPU window appears. Protocol bumped 19 → 20: a semantic-session `SessionBootstrapRequest` after `AttachRequest`, plus an appended `InstanceMessage::InitialTargetResult` pre-window readiness barrier; v6–v19 wire encodings are unchanged. Root owns launcher tilde/cwd resolution and exact raw-byte path transport; the daemon resolves/dedups/loads the target and runs load/switch hooks inside one dispatcher transaction, then publishes CRDT-upgraded targets to existing grid replicas (gated on `upgraded_to_crdt`, independent of the load/create outcome, so a dedup onto a hidden not-yet-backed buffer still reaches pre-attached replicas — round 2 finding). Semantic replicas receive a publication only when displaying that buffer, so a second target launch cannot switch an existing GPU window. Round 2 also closed a failure-containment gap: every dispatcher-side bootstrap failure now shuts down the socket (a dropped write-half clone does not close a shared FD), and the dispatcher drops any event from a session that was never installed, rather than reaching absent render/size state. Integrated cleanly with Folding Stage 2 (#149): fold projection at attach is selected from the same negotiated `semantic_render` bit the target bootstrap uses. Its lane, worktree (`../pmacs-gpu-initial-target`), and branch (`gpu-initial-target`) are done; the `-framing` branch is kept. Durable substrate facts and both review-round lessons live in `docs/agent-handoff.md` §§1/5 and `docs/gpu-initial-target-framing.md` rev 3. - **Folding Stage 2 (grid/daemon collapse) — MERGED as #149** (`main` @ `6ed4fe9`, 2026-07-24, after **five** review rounds). The grid TUI now renders collapses. Spine (Q#FD12): `src/fold_view.rs`'s `VisibleLineMap`, derived from the fold store plus a window's line offsets and **never stored**, threaded as `Option<&'a VisibleLineMap>` on a lifetime-bearing `Viewport<'a>` that stays `Copy`. No wire schema or protocol change; the GPU path is Stage 3. 48 acceptance tests on the real `paint_frame` grid, every behavioral claim bite-verified. Durable design points, each a trap Stage 3 inherits: - the map's unit is a **merged hidden component** (overlapping *or adjacent* intervals unioned, keeping the earliest visible head), not a fold — folds may cross, and a later fold's own head can be hidden; - instances are **per rendered window** and **per command/event operation**, never per frame; a command's map follows the operation's **target** window, since a wheel event names a pane without activating it; - fold projection is **per-frontend** (`FrontendView.fold_projection`) — shared `EditorCore` motion would otherwise make a simultaneous unfolded GPU session's cursor skip lines it still displays; - a hidden cursor normalizes by **position**, not row, and `set_view_top` clamps in the setter rather than being repaired at render time; - the interactive-Lua unfold keys on the **post-intercept** edit site — a managed buffer intercept may legally relocate the op. Process notes worth keeping: `main` moved under the arc, and the merge was textually clean but **not semantically clean** (#146 added `Viewport` literals the new `folds` field invalidated) — a clean `git merge-tree` does not mean the merged tree compiles. CI was red at review on the macOS/luajit `outline_5_level_100_entry_renders_within_100ms` budget flake and went green on rerun. - **Documentation ledger refresh — MERGED as #147** (`main` @ `0a479ae`, 2026-07-24). The #142 housekeeping, expanded after review found the ledger stale through four merges rather than one. Its own macOS/luajit red was the vterm `VTERM_ALT_READY` PTY timeout; green on rerun. - **Web grammars HTML + CSS — MERGED as #146** (`main` @ `47581f4`, 2026-07-23). `.html/.htm/.xhtml` and `.css` highlight off the official `tree-sitter-html` 0.23 / `tree-sitter-css` 0.25 crate query constants (no in-repo overlay), and HTML's `INJECTIONS_QUERY` lights up `