A simple-mode Form-B insert (`insert into T values (…)`) submitted faster
than the post-DDL schema-cache refresh was validated against the stale
cache and wrongly rejected as "trying to write SQL?". The cache is
refreshed asynchronously after the worker applies a command, posting
`SchemaCacheRefreshed` on the same FIFO channel as key events; under
faster-than-human input the next Enter is processed before the refresh.
Add a submission gate: `dispatch_dsl` arms `awaiting_schema_refresh` on
every `ExecuteDsl` dispatch, holds further DSL submissions in a
`held_submissions` FIFO while armed, and the `SchemaCacheRefreshed`
handler drains them against the fresh cache in submission order.
App-lifecycle commands bypass the gate. Arm-on-every-dispatch keeps
exactly one DSL command in flight, so the boolean is provably correct.
Interactive-only: the replay/batch path already re-snapshots the schema
synchronously per line. No interactive-user impact; held input is never
lost (a refresh always follows a dispatch).
Tests (both verified red→green): a Tier-1 deterministic ordering test and
a Tier-4 PTY back-to-back regression (the unpaced inverse of flow 3).
Records the design as ADR-0022 Amendment 8.
`rss_kib` is Linux-only (#[cfg(target_os = "linux")]) and was the sole
caller of `pid()`, so on macOS/Windows `pid` was dead code and emitted a
`method `pid` is never used` warning. The Linux CI clippy gate never saw
it — `pid` is used on Linux — so it only surfaced on a manual macOS run.
Read `child.process_id()` inline in `rss_kib` and delete the helper.
Verified: macOS `cargo test` is fully green (5 e2e_pty tests there; the
Linux-only RSS test is cfg'd out). clippy --all-targets + fmt clean.
Wire the Tier-4 tier from ADR-0008 — the first tests that drive the actual
built binary in a real pseudo-terminal. tests/e2e_pty.rs spawns the binary
under portable-pty at a fixed 100x30, parses output with vt100, and asserts
on the rendered screen with tight (3s) fail-fast waits. Serial (one PTY at a
time) for predictable timing on the low-parallelism runner; each test gets
its own temp --data-dir so it never touches real projects.
The four flows mirror ADR-0008's Tier-4 scope:
- cold launch -> create table -> graceful quit (Ctrl-C)
- create + add column -> quit -> reopen (--resume) -> schema (incl. column)
restored
- export -> import into a fresh project -> schema + data rebuilt
- undo after DROP TABLE, through the confirm modal (y)
Table presence is read from the Tables sidebar region (not whole-screen)
since the Output panel echoes commands; commands are paced to completion
(real-user cadence) — a command sent mid-rebuild can be misread against a
stale schema cache (issue #39).
Also two NFR perf measurements via the harness (NFR-1 startup, NFR-3 idle
RSS) against generous debug-binary bounds for gross-regression detection;
the real release figures (median 29 ms / 10 MB) are recorded in the NFR doc.
Deps (dev): portable-pty 0.9, vt100 0.16 (both current; expectrl from
ADR-0008 dropped — it bundles a conflicting PTY layer). Runs by default in
`cargo test`, so the existing Linux CI gate exercises it (advances TT5).
PTY-in-container verified (openpty+spawn works under Docker).
Full suite: 2519 passed / 0 failed / 1 ignored. clippy + fmt clean.
Relates to TT4 / ADR-0008.