Cut v0.75.4 — pi 0.75.3 -> 0.75.4

One upstream patch release. PI_VERSION=latest in Dockerfile resolves
to 0.75.4 at build time, so no Dockerfile change is needed; just a
CHANGELOG promote.

Tagged speculatively before opencode-devbox v1.15.6's omos-with-pi
smoke completes — pi 0.75.4 is a single patch on top of 0.75.3, low
risk on its own. If opencode-devbox v1.15.6 surfaces a pi 0.75.4
problem in the omos-with-pi smoke (3700 MB threshold trip, etc.),
both releases would fail in symmetric ways and recovery would be a
v0.75.4b/v1.15.6b pair. Same recovery muscle as v1.15.4 -> v1.15.4b
last week.

Built on opencode-devbox:base-latest, cache-hit on base-35ee5fe7861a
since v1.14.50b — base unchanged across both bumps.

AGENTS.md

@@ -35,3 +35,16 @@ Container image that adds pi coding-agent on top of the opencode-devbox base ima
 - Do NOT call `mempalace-toolkit/install.sh` in the Dockerfile — the base entrypoint handles it
 - `NPM_CONFIG_PREFIX=/usr` must be set per-RUN for any build-time `npm install -g` to keep baked binaries off the volume-shadowed path
 - The smoke test threshold is 2200 MB — update if the image legitimately grows past it
+
+## Documentation drift sweep
+
+Before committing any non-trivial change, check that prose still matches code. Drift hotspots in this repo:
+
+- `README.md` — quick-start examples, env-var table, base-image reference (must match `FROM` in `Dockerfile`).
+- `AGENTS.md` (this file) — `Key facts` block (pi binary path, `NPM_CONFIG_PREFIX`, base-image tag), smoke-test threshold number.
+- `CHANGELOG.md` — promote `Unreleased` only on tag, but record post-release fixes in a fresh `Unreleased` block.
+- `DOCKER_HUB.md` — hand-maintained slim Hub description; sync anything user-facing that changes (env vars, run command, base image).
+- `.env.example` — hand-updated, must match Dockerfile/entrypoint env vars.
+- `Dockerfile` `PI_VERSION` ARG default — if you intend to pin (rather than `latest`), bump it on release.
+
+Quick triage: `git diff --name-only HEAD | xargs -I{} grep -l 'thing-you-changed' README.md AGENTS.md DOCKER_HUB.md CHANGELOG.md .env.example`.

CHANGELOG.md

@@ -8,6 +8,14 @@ Tags follow the pi npm version: `v{pi_version}[letter]` — bare tag for the fir
 
 ## Unreleased
 
+## v0.75.4 — 2026-05-21
+
+pi `0.75.3` → `0.75.4` bump (one upstream patch release). Plus the AGENTS.md documentation-drift sweep clause that landed on `main` between v0.75.3 and now.
+
+- **Bump:** pi `@earendil-works/pi-coding-agent@0.75.4` baked at `/usr/bin/pi` (via `PI_VERSION=latest` resolving to 0.75.4 at build time — no Dockerfile change needed).
+- **AGENTS.md:** documentation drift sweep as explicit pre-commit workflow step (commit `ae6253a`). Companion clause added across the wider repo set the same day.
+- No image-side changes beyond the pi npm version. Built on `joakimp/opencode-devbox:base-latest` which itself is unchanged (cache-hit on `base-35ee5fe7861a` since v1.14.50b).
+
 ## v0.75.3 — 2026-05-18
 
 pi `0.74.0` → `0.75.3` bump (one upstream minor + three patch releases since the initial pi-devbox release on 2026-05-14).