docs: record dired Stage 1 (#165) as landed

#165's own commits could not update the handoff snapshot to name the
merge that contains them, so the protocol obligation lands here.

- `docs/agent-handoff.md`: absorb the dired lane into §1, replacing the
  placeholder that promised exactly this. The bullet carries Stage 1's
  durable substrate facts — why the tolerant `read_dir` had to be Rust,
  why exposing the core normalizer beat mirroring it in Lua, the
  fixed-width `_layout` contract Stage 3 reads offsets from, the
  ambient-action buffer guard, treating a failure as the answer instead
  of probing, the per-entry error cap, the first mode-scoped keymap and
  the pre-existing test it broke, and the dedication a descent does not
  carry. Refresh the head-of-`main` anchor and the last-updated line.
- `docs/agent-handoff.md` §5: two ops lessons that cost real time. A fix
  must be committed before it is bitten, because `scripts/bite` restores
  by `git checkout --` and reverts to HEAD; a CONFLICTING PR runs no CI
  at all, because `pull_request` workflows build a merge ref GitHub does
  not create while the branch conflicts, and nothing reports the absence.
- `docs/active-work.md`: remove the merged lane per update-protocol rule
  4 and summarize it under "Closed since the last snapshot", keeping the
  two forward items Stage 2 needs (the rename rebind is first-match-only
  over a raw path, and Q#DR5's seam is the main-thread drain). Refresh
  the canonical base. Flag the two lane headers that still call a merged
  PR "IN REVIEW" — #161 and #166 — rather than editing lanes another
  thread owns.
- `COHERENCE.md`: #165 is no longer a PR. Per §25 the audited claims this
  work changed were updated when it landed; this corrects their tense in
  seven places and the two prose lines that still asserted dired was in
  flight.
- `docs/dired-framing.md`: status line to MERGED, and state plainly that
  Stages 2 and 3 each still need their own framing.

Docs only; no code, no gate-relevant change.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0126d2sikA6jZpFin3rtLCSK

COHERENCE.md

@@ -120,7 +120,7 @@ asymmetry**, and **per-arc coherence debt**.
 
 Coherence-shaped work already in flight at audit time: find-file /
 dired Stage 0 (`C-x C-f`, merged #162, `docs/dired-framing.md`) and its
-Stage 1 directory view (PR #165), bottom panel Stage 1 (merged #155),
+Stage 1 directory view (merged #165), bottom panel Stage 1 (merged #155),
 multi-root LSP affinity (merged #161), the config registry foundation
 (merged #127).
 
@@ -195,7 +195,7 @@ working, unreachable capability:
   time; a complete 1,384-line dired existed only as a frozen test
   fixture (`tests/fixtures/pmacs-dired/init.lua`). **Fixed:** dired
   Stage 0 opens a path (`C-x C-f`, merged #162) and Stage 1 ships the
-  browsing view as a builtin (`C-x d` / `C-x C-j`, PR #165). The fixture
+  browsing view as a builtin (`C-x d` / `C-x C-j`, merged #165). The fixture
   stays frozen — its `install_local` + `require` routing *is* the M8
   package-universality proof (Q#DR1) — and shrinking it is scheduled
   after Stage 3.
@@ -363,11 +363,11 @@ Full verdict table:
 |---|---|---|---|
 | 1 | Install | **Partial** | Source build only: `cargo build --release --workspace --features pmacs/crdt` (`README.md`). No binaries, no packaging. Runtime deps (`/bin/sh`, git, tar, coreutils) documented, never checked at runtime |
 | 2 | Launch unconfigured | **Works** | `EditorState::new()` → empty `*scratch*`; missing config is not an error (`src/config.rs:7-9`); recentf/saveplace/autosave default-on |
-| 3 | Open real project | **Missing at the CLI** | `pmacs .` still exits 1 (above): `load_file` does `File::open` (which succeeds on a directory) then `read_to_end` → EISDIR, which is not `NotFound`, so `resolve_target_buffer`'s create-a-`[new file]` arm never fires. Dired Stage 1 (PR #165) supplies the buffer a directory should resolve *to*; routing `pmacs .` into it is Journey Stage 1's work, which must not invent a second directory surface |
+| 3 | Open real project | **Missing at the CLI** | `pmacs .` still exits 1 (above): `load_file` does `File::open` (which succeeds on a directory) then `read_to_end` → EISDIR, which is not `NotFound`, so `resolve_target_buffer`'s create-a-`[new file]` arm never fires. Dired Stage 1 (merged #165) supplies the buffer a directory should resolve *to*; routing `pmacs .` into it is Journey Stage 1's work, which must not invent a second directory surface |
 | 4 | Understand interface | **Partial** | Mode line gives name/modified/L:C/scroll + mode/LSP/terminal segments; but no welcome text (`EditorCore::new` sets `status: String::new()`), no cheat sheet, and `C-h` deletes a word (§18) |
 | 5 | Edit | **Works** | Full CUA + Emacs keymap in 161 lines (`builtin/keymaps/default.lua`); isearch, query-replace, kill ring, undo/redo, auto-indent/pair/comment, atomic save. Genuinely excellent zero-config |
 | 6 | Language intelligence | **Partial** | Rust grammar bundled and auto-attaches; rust-analyzer preconfigured (`builtin/runtime/lsp.lua:44-52`) — but a missing binary fails silently (§1.2) and highlighting masks it. No LSP status command exists to diagnose |
-| 7 | Find symbol / file | **File: fixed (open by path merged #162; browsing PR #165). Symbol: works but undiscoverable** | No find-file/dired/picker existed at audit. Now `C-x C-f` opens a known path and `C-x d` / `C-x C-j` browse (flat listing, `dired` mode keymap); `M-.`/`M-?`/`C-c o` still bound but advertised nowhere and server-gated; no workspace-symbol command; `pmacs.index.*` has no UI |
+| 7 | Find symbol / file | **File: fixed (open by path merged #162; browsing #165). Symbol: works but undiscoverable** | No find-file/dired/picker existed at audit. Now `C-x C-f` opens a known path and `C-x d` / `C-x C-j` browse (flat listing, `dired` mode keymap); `M-.`/`M-?`/`C-c o` still bound but advertised nowhere and server-gated; no workspace-symbol command; `pmacs.index.*` has no UI |
 | 8 | Open terminal | **Works but undiscoverable** | Full PTY with scrollback + modeline segment — reachable only as `M-x terminal`, no keybinding. *Was broken outright on the GPU frontend until the double terminal-layout sync was fixed: the child took a `SIGWINCH` storm at tick cadence, so typing into it was impossible while output still flowed.* |
 | 9 | Build / test | **Partial** | `M-x compile.run` works, defaults cwd to detected project root, parses Rust `-->` errors — but no keybinding, an **empty first prompt** (`initial = last and last.cmdline or ""`, `builtin/runtime/compile.lua:1134-1138`), and no `cargo build`/`cargo test` suggestion despite `ProjectKind::Cargo` existing (`src/project.rs:77`) |
 | 10 | Inspect error | **Partial (good once reached)** | `E:n W:n` modeline counts, underlines, `M-g n/p` + ``C-x ` `` walking a unified compile/grep/diag source, message echo, `RET` visits. Gated entirely on step 6 or 9 succeeding first |
@@ -460,7 +460,7 @@ level is the one missing. Audited level-by-level:
 **Beginner** (should see: files, buffers, search, diagnostics, terminal,
 build actions, menus, missing-tool guidance):
 
-- files ✓ since #162 / PR #165 (`C-x C-f` opens a path, `C-x d` browses;
+- files ✓ since #162 / #165 (`C-x C-f` opens a path, `C-x d` browses;
   neither is advertised anywhere but the keymap) · buffers ✓ (`C-x
   b`, `*buffer-list*`) · search ✓ (`C-s`/`C-r`/`C-M-s`; project.search
   is M-x-only) · diagnostics ✓ once a server runs · terminal ✓ but
@@ -1183,7 +1183,7 @@ Primitive-by-primitive against the list above:
   hierarchy, package dependency graph, worker trees, git status) will
   each need it; building it once *before* dired's directory view and
   the workers tree harden their own conventions is exactly this
-  section's point. Dired Stage 1 (PR #165) landed **without** inventing
+  section's point. Dired Stage 1 (merged #165) landed **without** inventing
   one: its listing is flat (Emacs parity), and the recursive
   in-buffer case — `i` insert-subdirectory — is a named deferral in
   `docs/dired-framing.md` §13, which is where a shared tree primitive
@@ -1340,7 +1340,8 @@ greets a new user says nothing (`EditorCore::new` sets an empty
 status).
 
 Note the dependency: five of the ten onboarding steps above currently
-lead somewhere broken or invisible (find a file — in flight; inspect a
+lead somewhere broken or invisible (find a file — the mechanism is fixed
+since #162/#165 but is advertised nowhere except the keymap; inspect a
 diagnostic — silent-failure risk; view workers — undiscoverable;
 setting provenance — unanswerable). Onboarding is correctly sequenced
 *after* the P1/P4 fixes, but the cheap floor — a welcome buffer in
@@ -1404,7 +1405,7 @@ Establish the end-to-end workflow; treat regressions as release
 blockers. **State: broken at step 3 (§2). Mostly wiring, and unusually
 cheap:** directory-argument handling (the remaining half of step 3 —
 dired Stage 1 landed the buffer it should resolve to); a find-file
-surface (**done**: #162 open-by-path, PR #165 browsing); surfacing the
+surface (**done**: #162 open-by-path, #165 browsing); surfacing the
 LSP spawn failure with guidance (§1.2); a
 compile keybinding + `cargo build`/`test` default from the existing
 `ProjectKind::Cargo`; a terminal keybinding; a welcome buffer. The
@@ -1474,7 +1475,9 @@ implementation — this list is direction, not commitment):
 
 1. **Journey Stage 1** (P1): directory open + compile defaults +
    LSP-failure surfacing + bindings + welcome buffer + the first
-   journey acceptance suite. Rides alongside the in-flight dired arc.
+   journey acceptance suite. Dired Stage 1 has landed (#165), so the
+   buffer a directory resolves *to* already exists; this arc routes
+   `pmacs .` into it rather than growing a second directory surface.
 2. **Discovery surface** (P4): the describe/list/where-is command
    family, M-x rich rows, help unification, help prefix.
 3. **Transient keymap layer** (§6): the overlay scope + lifetime

docs/active-work.md

@@ -5,6 +5,14 @@ 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.
 
+**Two lane headers below are stale on purpose**, pending the docs updates
+their own lanes owe: multi-root LSP affinity **#161 has merged** (the
+Lean 4 lane still says IN REVIEW; its continuation is PR #167) and GPU
+terminal input **#166 has merged** (its lane still says IN REVIEW; PR
+#168 records it). Trust the canonical-base line below over a lane header:
+if a PR number appears in `git log --first-parent githubsucks/main`, it
+has landed regardless of what its lane says.
+
 ## Repository authority
 
 - Canonical development URL:
@@ -14,11 +22,14 @@ backlog.
   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` @ `8c86d34` (the dired framing #164 atop find-file
+  `githubsucks/main` @ `c8ec8f3` (dired Stage 1 #165 atop GPU terminal
-  #162, COHERENCE.md #163, Lean 4 Stage 1 #160, the minimap blank-slab fix
+  input #166, multi-root LSP affinity #161, the dired framing #164,
-  #159, bottom-panel Stage 1 #155, the inline-math re-scout #154, the vterm
+  find-file #162, COHERENCE.md #163, Lean 4 Stage 1 #160, the minimap
-  PTY-flake fix #153, and the GPU initial-target doc refresh #152; protocol
+  blank-slab fix #159, bottom-panel Stage 1 #155, the inline-math re-scout
-  v20).
+  #154, the vterm PTY-flake fix #153, and the GPU initial-target doc
+  refresh #152; protocol v20). **Lanes below that name an older base have
+  not been re-based; derive their integration surface from
+  `git diff <their base>..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
@@ -189,154 +200,6 @@ If it does not, stop and repair the remote/fetch configuration.
   suites**; `git diff --check` clean. The sweep needs an isolated
   `XDG_CONFIG_HOME` and `-- --skip basedpyright`.
 
-## Dired lane — Stage 0 MERGED; Stage 1 IN REVIEW (PR #165)
-
-- Approved framing: `docs/dired-framing.md` **revision 6** — rev 5 is the
-  approved text (merged as its own docs PR #164), rev 6 adds §0's Stage 1
-  implementation notes (S1-1…S1-9). Stages 2 (marks and operations) and 3
-  (wdired) each get their own detailed framing after the prior stage lands.
-- **Stage 0 (`C-x C-f` find-file) MERGED as #162** (`main` @ `2af1ab3`,
-  2026-07-25, one review round, 12/12 CI green). Durable facts moved to
-  `docs/agent-handoff.md` §1 per rule 3 below.
-- **Stage 1 branch: `githubsucks/dired-stage1`**, worktree
-  `../pmacs-dired-stage1`, based on `githubsucks/main` @ `8c86d34` (the
-  framing merge #164). **A fresh cut, not a rebase:** the older `dired`
-  branch (`ffdd642`, worktree `../pmacs-dired-arc`) was based on the
-  superseded `0827dd1` and carried only the framing content #164 already
-  put on `main`, so merging it would have reconciled two histories of one
-  document. It is left untouched and carries nothing unmerged.
-- **Stage 1 implemented; no wire change (protocol stays v20).** What
-  landed on the branch:
-  - `builtin/runtime/dired.lua`: one buffer per directory named
-    `*dired:<canonical path>*` with the handle-table ownership check;
-    read-only intercept + `set_round_trip_input`; the `dired` major mode
-    and its mode-scoped keymap (`RET`/`f`, `^`, `n`/`p`, `g`, `q`, `s`);
-    basename cursor re-seating across every wholesale repaint;
-    `display_file` for file visits and same-window reuse for directory
-    descent; `C-x d` / `C-x C-j`; the `dired.kill-when-opening` setting.
-    Loaded after `window.lua`.
-  - `src/fs.rs`: `ReadDirTolerance`, `FsDirEntryError`, `FsDirListing`,
-    and one walk that either fails on a per-entry condition or records it
-    (Q#DR6). `src/async_runtime.rs` carries the listing in
-    `ReplyKind::ReadDir` / `JobResult::ReadDir`; `src/lua_bindings/mod.rs`
-    keys the Lua result **shape** on `errors.is_some()`, so the bare array
-    the frozen M8.2 fixture consumes with `ipairs` is untouched;
-    `builtin/runtime/fs.lua` validates read-op opts and **rejects unknown
-    keys** (a typo'd `tolerant` used to degrade silently to fatal).
-  - `src/editor_core.rs` + `src/lua_bindings/mod.rs`:
-    `normalize_buffer_path` is `pub` and exposed as
-    `pmacs.path.canonicalize` — Q#DR2's preferred end state, so no Lua
-    mirror exists and Stage 2 owes no mirror removal. This makes B2
-    ("tolerant `read_dir` is the only Rust change") false by one small
-    binding, deliberately.
-  - `tests/dired_acceptance.rs`: 22 tests over framing items 1–16,
-    dispatch-driven; item 17 is the m8_1/m8_2/m8_3 additivity gate.
-- **The framing claim the substrate falsified (S1-2):** R2-3 expected a
-  dedicated dired panel to carry its dedication across a descent.
-  `display_buffer` never replaces the buffer in a slot dedicated to
-  another one — it discards every side-specific parameter and falls back
-  to the document window (Q#BP3 2.iii), and the exact-window arm errors.
-  Dired does not unpin the user's panel; both arms are pinned.
-- **The vacuity the bites found (S1-3):** acceptance 3c cannot pin the
-  descent *routing*. Dired holds focus in its own panel, so a raw
-  `switch_buffer` lands in the same window and every 3c assertion holds
-  either way. Dedication is the only discriminator, so the
-  dedicated-panel test is the real pin — and the vacuity is documented at
-  the assertion rather than relabelled.
-- **The pre-existing test dired's first mode-scoped binding broke
-  (S1-4):** `describe_key_identifies_every_default_binding` asserted every
-  binding in the stack resolves through `describe.key` context-free, which
-  held only while the modes table was empty. It now sets the effective
-  context per binding and explicitly *clears* the mode for global ones,
-  because a leaked mode legitimately shadows a global chord of the same
-  name (dired's `RET` shadows `edit.newline-and-indent`).
-- Durable substrate facts, independent of this arc:
-  - `pmacs.buffer.kill` (not `remove`) redirects windows off a doomed
-    buffer before removal, so `kill-when-opening` kills **after** the
-    replacement is displayed.
-  - Interactive origin does **not** survive an await: work resumed in
-    `tick_async` sees no `InteractiveCommandOrigin`, so `pmacs.window.*`
-    acts for the *ambient* active frontend (S1-9).
-  - Kinds are lstat-based in both `read_dir` and `stat`, so nothing in an
-    entry says whether a symlink points at a directory; `RET` probes by
-    trying to list it (S1-8).
-  - A path-backed buffer's *name* is its full path, not its basename —
-    worth knowing before writing any name assertion.
-  - `C-x d` takes **no** completion source on purpose (S1-5): with one,
-    RET on an empty field opens whatever sorts first, and
-    RET-on-where-you-are is the gesture the binding exists for. The field
-    is prefilled instead.
-- **Bite verification:** 15 claims, each mutated in place and required to
-  fail the test that names it. `dired.lua` is new, so `scripts/bite`'s
-  file swap does not apply; every mutation was applied and reverted with
-  `git checkout --`. One came back VACUOUS and is recorded above.
-- **Review round 1 addressed** (framing rev 7, S1-10…S1-12). Three
-  behavioral fixes, each bite-verified: `dired.revert`'s re-seat is
-  guarded on the active buffer (an ambient `move_to_line` after an await
-  moved an unrelated buffer's cursor — the buffer-level instance of
-  S1-9); `fmt_size` keeps the column width past ten digits, because
-  `_layout` is a contract Stage 3 is planned against; and the symlink
-  descent dropped its probe, since `open_directory`'s
-  changed-nothing-on-failure invariant *is* the probe (it was listing the
-  target directory twice). Plus a consecutive-`readdir`-error cap, because
-  **nothing cancels a dired listing** — it carries no supersede key, so
-  cancellation was never the backstop the tolerant loop implicitly relied
-  on. Naming/comment findings taken as-is.
-  - Durable process lesson, hit twice now: a mutation-bite helper restores
-    with `git checkout --`, which reverts to **HEAD** — so a fix must be
-    committed *before* it is bitten. Round 1's fixes were briefly wiped by
-    exactly that.
-- **Canonical main integrated twice** — at `46a1b8f` (multi-root LSP
-  affinity #161) and again at `b889873` (GPU terminal input #166), both
-  merged rather than rebased per the #135/#137 precedent so the review
-  anchors stay addressable. Each conflict was a single doc hunk resolved
-  as the union: this lane owns COHERENCE's journey step 7 file half, #161
-  owns the in-flight list, #166 owns step 8's GPU-terminal addendum.
-  Three things worth carrying:
-  - **A conflicting PR silently stops running CI.** GitHub builds
-    `pull_request` runs against the merge ref, which does not exist while
-    the PR conflicts, so no run is created and nothing reports a
-    failure — the checks list simply stays as it was. Three pushes to
-    this branch produced no CI at all before the cause was found. Watch
-    `mergeable` on a long-lived lane, not just the check list.
-  - #161's own COHERENCE finding **falsified a claim in this lane's
-    module doc**: `pmacs.error` is never defined in production, so an
-    uncaught raise inside a `pmacs.async` coroutine does not reach
-    `*errors*` as the comment said. It reaches a bare `error()` inside
-    `pmacs._async.tick()`, whose result `tick_async` discards with
-    `let _ =` — i.e. nowhere. That makes dired's per-coroutine `pcall` +
-    `set_status` load-bearing rather than tidy, and the comment now says
-    so.
-  - **A lane in review against a fast-moving `main` needs its gates rerun
-    per integration, not per push.** Main advanced twice inside this
-    review round, and the second time landed while the first
-    integration's sweep was still running. The numbers below describe the
-    twice-merged tree.
-- Verification on the twice-merged tree (`main` @ `b889873`):
-  `cargo fmt --check` clean; strict workspace Clippy clean; **1,832
-  default + 2,009 CRDT** library tests; dired acceptance **25 default +
-  25 CRDT**; m8_1 10 / m8_2 15 / m8_3 32 unchanged; multi-root 13 and
-  vterm Stage 3 5 (both suites main added, green under this lane's
-  `mod.rs` and `editor.rs` changes); M4 121; required GPU 155;
-  **isolated-`XDG_CONFIG_HOME` workspace sweep 3,205 passed across 93
-  suites, zero failures**; `git diff --check` clean. The sweep needs the
-  isolated config for the reason recorded in the bottom-panel lane
-  below.
-- Coherence (framing §0.5, required since #163): serves `COHERENCE.md` §20
-  Priority 1, which names this work explicitly; journey step 7's file half
-  goes from no surface to a surface; **adds no interaction island** — keys
-  are a mode-scoped keymap, and wdired will be a mode swap; adopts
-  `pmacs.config` for `dired.kill-when-opening`; inherits §9's
-  worker-attribution gap for its `read_dir` jobs without worsening it. The
-  audited claims this changes are updated in `COHERENCE.md` itself, per its
-  §25.
-- **Boundary with the Journey Stage 1 arc** (`COHERENCE.md` §20 arc-cut
-  1): CLI directory-argument handling (`pmacs .` exits 1) belongs there,
-  not here — Stage 1 does **not** fix it. The two meet at
-  `resolve_target_buffer`; dired supplies the buffer a directory should
-  resolve *to*, and `pmacs .` should route into it rather than growing a
-  second directory surface.
-
 ## GPU terminal input lane — IN REVIEW
 
 - Portable branch: `githubsucks/gpu-terminal-input`, worktree
@@ -593,6 +456,38 @@ git worktree add --track \
 
 ## Closed since the last snapshot
 
+- **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:<canonical path>*`, 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 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

docs/agent-handoff.md

@@ -1,7 +1,9 @@
 # Agent handoff — cross-machine continuity
 
-**Last updated: 2026-07-25, after find-file (#162) landed — the dired
+**Last updated: 2026-07-25, after dired Stage 1 (#165) landed — the
-arc's Stage 0 — following COHERENCE.md (#163), Lean 4 Stage 1 (#160), the
+directory view — following GPU terminal input (#166), multi-root LSP
+affinity (#161), the dired framing (#164), find-file (#162) — the dired
+arc's Stage 0 — COHERENCE.md (#163), Lean 4 Stage 1 (#160), the
 minimap blank-slab fix (#159), bottom-panel Stage 1 (#155), the
 inline-math re-scout (#154), the vterm PTY-flake fix (#153), and the
 GPU initial-target doc refresh (#152); and before that GPU
@@ -26,11 +28,13 @@ commands, read `docs/active-work.md` immediately after this file.
 
 ## 1. Where the project stands (2026-07-25)
 
-- `main` @ `2af1ab3` (find-file #162 atop COHERENCE.md #163, Lean 4 Stage 1
+- `main` @ `c8ec8f3` (dired Stage 1 #165 atop GPU terminal input #166,
-  #160, minimap blank-slab #159, bottom-panel Stage 1 #155, inline-math
+  multi-root LSP affinity #161, the dired framing #164, find-file #162,
-  re-scout #154, vterm PTY-flake #153, and doc refresh #152). Protocol
+  COHERENCE.md #163, Lean 4 Stage 1 #160, minimap blank-slab #159,
-  unchanged at **v20**. The bullets below describe the arcs in their own
+  bottom-panel Stage 1 #155, inline-math re-scout #154, vterm PTY-flake
-  terms; this line is the head-of-`main` anchor.
+  #153, and doc refresh #152). Protocol unchanged at **v20**. The bullets
+  below describe the arcs in their own terms; this line is the
+  head-of-`main` anchor.
 - **`COHERENCE.md` is now required reading and a required framing input
   — #163.** It carries the product-coherence thesis, an audited
   scorecard, per-concern gaps, and §20's priority order, and it is the
@@ -70,11 +74,78 @@ commands, read `docs/active-work.md` immediately after this file.
     against an open buffer yet fails to load one that is not open —
     find-file expands the tilde Lua-side. Loading through the normalized
     path is a named deferral.
-  - **Stage 1 (the directory view) is IN REVIEW as PR #165** — the
+- **dired Stage 1 — the directory view — LANDED — #165**
-    builtin `dired.lua`, the per-entry-tolerant `read_dir` opt, and
+  (`docs/dired-framing.md` §0, S1-1…S1-12; merge `c8ec8f3`; one review
-    `pmacs.path.canonicalize`. Its branch state, substrate facts, and
+  round). pmacs now has a directory surface: `C-x d` / `C-x C-j` open a
-    verification live in `docs/active-work.md`; this section absorbs them
+  read-only listing, one buffer per directory named
-    when it merges.
+  `*dired:<canonical path>*`, with a `dired` major mode whose
+  mode-scoped keymap carries `RET`/`f`, `^`, `n`/`p`, `g`, `q`, `s`.
+  Protocol unchanged at **v20**. **Stage 2 (marks and operations) and
+  Stage 3 (wdired) each still need their own framing**; the frozen
+  fixture shrinks after Stage 3.
+  - **The Rust is confined to two things**: a per-entry-tolerant
+    `read_dir` (`ReadDirTolerance {Fatal, PerEntry}` →
+    `FsDirListing {entries, errors}`), because `read_dir_blocking` fails
+    a whole listing on any of five per-entry conditions and the tolerant
+    wrapper its own module doc delegates to package authors **cannot be
+    written in Lua** (one error value, no partial vec); and
+    `editor_core::normalize_buffer_path` becoming `pub`, exposed as
+    `pmacs.path.canonicalize`. Only non-UTF-8 **names** stay fatal —
+    byte-preserving paths would be needed. The Lua result **shape** keys
+    on `errors.is_some()`, so the bare array the frozen M8.2 fixture
+    consumes with `ipairs` is untouched.
+  - **Exposing a core normalizer beat mirroring it in Lua.** A Lua mirror
+    would have been a second canonical form — the same class of bug as
+    the five tab-width constants (#137). Applies to any future Lua-side
+    path reckoning.
+  - **A fixed-width column must be fixed-width for every input.** The
+    exported `pmacs.dired._layout` (MARK 0, KIND 2, PERMS 3–12, SIZE 13,
+    MTIME 24, NAME 41) is the contract Stage 3 reads offsets from, and
+    `%10d` overflows at ≥10 GB, silently shifting every column right of
+    it. Sizes now fall back to a width-clamped magnitude (K/M/G/T/P/E).
+  - **An ambient action must be gated on the buffer it assumes.** A
+    revert's cursor re-seat settles a tick or more later, by which time
+    the user may have switched buffers; the paint names its buffer and is
+    safe, but seating is ambient. This is the buffer-level instance of
+    the rule below that interactive origin does not survive an await.
+  - **A failure IS an answer — don't probe first.** Kinds are lstat-based
+    in both `read_dir` and `stat`, so nothing in an entry says whether a
+    symlink points at a directory. `RET` tries to list it and treats the
+    failure as the answer; an explicit probe was a second full
+    `read_dir`, so a descent listed twice.
+  - **Unbounded per-entry error collection needs a cap when nothing
+    cancels the work.** A dired listing carries no supersede key, so
+    cancellation was never the backstop the tolerant loop implicitly
+    relied on (`READDIR_MAX_CONSECUTIVE_ENTRY_ERRORS = 1024`).
+  - **This is the first builtin with mode-scoped keys** (#129's first
+    non-detection consumer), which broke the pre-existing
+    `describe_key_identifies_every_default_binding`: it asserted every
+    binding resolves through `describe.key` context-free, which held only
+    while the modes table was empty. It now sets the effective context
+    per binding and explicitly **clears** the mode for global ones,
+    because a leaked mode legitimately shadows a global chord of the same
+    name (dired's `RET` shadows `edit.newline-and-indent`), plus a floor
+    assertion that at least one mode-scoped binding exists.
+  - **A dedicated panel does not carry its dedication across a descent**
+    — the framing expected it to. `display_buffer` never replaces the
+    buffer in a slot dedicated to another one; it discards every
+    side-specific parameter and falls back to the document window (Q#BP3
+    2.iii), and the exact-window arm errors. Dired does not unpin the
+    user's panel; both arms are pinned.
+  - Smaller facts worth knowing before touching this code: a path-backed
+    buffer's **name is its full path**, not its basename, which matters
+    for any name assertion; `pmacs.buffer.kill` (not `remove`) redirects
+    windows off a doomed buffer first, so `dired.kill-when-opening` kills
+    **after** the replacement is displayed; ownership is checked against
+    the handle table only, never the buffer name; and `C-x d` takes **no**
+    completion source on purpose (with one, `RET` on an empty field opens
+    whatever sorts first, and RET-where-you-are is the gesture the binding
+    exists for — the field is prefilled instead).
+  - Verification at merge: 1,832 default + 2,009 CRDT library tests;
+    dired acceptance 25 + 25 CRDT; the frozen m8_1 10 / m8_2 15 / m8_3 32
+    unchanged, which is the additivity gate for the `read_dir` change; M4
+    121; required GPU 155; isolated-`XDG_CONFIG_HOME` workspace sweep
+    3,205 across 93 suites. 15 claims bite-verified.
 - **GPU initial target LANDED — #148**
   (`docs/gpu-initial-target-framing.md` rev 3; merge `0dd16a5`; two review
   rounds). `pmacs --gpu [--socket NAME|PATH] FILE` transports exact Unix path
@@ -760,6 +831,24 @@ final variant — its own round-trip cannot detect a discriminant shift.
   trap-guarded one-file swap over read-only `git show`, with an
   inverted verdict (exit 0 iff the tests FAIL against the old
   version), making bite-verification machine-checkable.
+- **A fix must be COMMITTED before it is bitten.** `scripts/bite`
+  restores by `git checkout --`, which reverts the file to **HEAD**, not
+  to the state it found — so any uncommitted work in a bitten file is
+  destroyed. A whole review round's fixes were wiped this way during
+  #165. Corollary for a NEW file: the swap-over-`git show` mode does not
+  apply at all, so its claims must be bitten by hand-editing, which makes
+  the commit-first rule load-bearing rather than hygienic.
+- **A CONFLICTING PR silently runs no CI at all.** GitHub builds
+  `pull_request` workflow runs against the PR's **merge ref**, which it
+  does not create while the branch conflicts with its base. So pushes
+  land, the branch updates, no run is ever queued, and **nothing reports
+  the absence** — the checks list simply keeps showing the last
+  successful run, which reads as current. Three pushes to #165 produced
+  zero CI before the cause was found, and `gh pr checks` returns nothing
+  usable here. On any lane that lives through a moving `main`, check
+  `gh pr view <N> --json mergeable,mergeStateStatus,headRefOid` and
+  confirm a run exists **for the current head sha**, not merely that a
+  recent run was green.
 - **Stacked PRs**: retarget the child to main BEFORE merging the
   parent — GitHub auto-closes a PR whose base branch is deleted and
   cannot reopen it (#104 → re-opened as #105).

docs/dired-framing.md

@@ -1,7 +1,9 @@
 # Dired — framing
 
 **Revision 7 — 2026-07-25. Status: APPROVED; Stage 0 MERGED as #162;
-Stage 1 IN REVIEW as PR #165, review round 1 addressed.**
+Stage 1 MERGED as #165 (`main` @ `c8ec8f3`, one review round). Stage 2
+(marks and operations) and Stage 3 (wdired) each still need their own
+framing before implementation; the frozen fixture shrinks after Stage 3.**
 Rev 1 passed a ground-truth review; rev 2 fixed round 1's seven findings;
 rev 3 fixed round 2's six and was approved; rev 4 recorded what Stage 0's
 implementation falsified in the approved text (§0); rev 5 adds the