deploy: static binary and a compose project name that does not collide

Two failures from the first real deploy, both repo-side:

1. The container logged "exec /usr/bin/resume-server: no such file or
   directory" and restarted until the health gate failed. The build host has
   cgo enabled, so the binary carried the nix glibc interpreter, and the
   distroless/static image has no dynamic loader. Every SQLite path already
   uses pure-Go modernc.org/sqlite, so build with CGO_ENABLED=0 and ship a
   static binary.

2. Compose warned about orphan containers ai-resume-backend-1 and
   ai-resume-db-1: /home/sam/deployment/ai-resume on .13 already owns the
   `ai-resume` compose project (on the ai-mesh network). Sharing the name makes
   each stack visible as orphans to the other, so a `compose down
   --remove-orphans` in either could stop the other. Run the site as project
   `ai-resume-site`; the image tag stays ai-resume:local and the port binding,
   mem_limit and memswap_limit are untouched.

Makefile

@@ -12,10 +12,18 @@ VALIDATOR := $(PYTHON) tools/validate_content.py
 GO ?= go
 TEMPL ?= templ
 
+# The runtime image is distroless/static (deploy/Dockerfile): no libc, no
+# dynamic loader. Everything the server needs is pure Go (modernc.org/sqlite),
+# so a static binary is buildable and is what the container can actually exec.
+# Without this the build host's cgo links the nix glibc loader and the container
+# fails with "exec /usr/bin/resume-server: no such file or directory".
+CGO_ENABLED ?= 0
+
 BIN := bin
 DIST := dist
 
-.PHONY: build dist generate dev test validate validate-self-test fmt vet clean help
+.PHONY: build dist generate dev test validate validate-self-test fmt vet clean help \
+        corpus corpus-sync corpus-rebuild corpus-audit corpus-verify corpus-demo corpus-test
 
 help:
 	@echo "make build            templ generate, compile bin/, no dist"
@@ -26,11 +34,19 @@ help:
 	@echo "make validate         validate content/** front-matter against the frozen schema"
 	@echo "make fmt vet          gofmt / go vet over cmd and internal"
 	@echo "make clean            remove bin/ and dist/"
+	@echo ""
+	@echo "corpus (Phase 4, python3 -m corpus.cli):"
+	@echo "make corpus           rebuild the corpus from content/ (drops the collection)"
+	@echo "make corpus-sync      incremental update; only changed documents are re-embedded"
+	@echo "make corpus-audit     freshness + drift audit (exit 1 on findings)"
+	@echo "make corpus-verify    check the index against content/ and Qdrant"
+	@echo "make corpus-demo      same query with and without an area filter"
+	@echo "make corpus-test      corpus unit tests (no container, no network)"
 
 build: generate
 	@mkdir -p $(BIN)
-	$(GO) build -trimpath -buildvcs=false -o $(BIN)/resume-build ./cmd/build
-	$(GO) build -trimpath -buildvcs=false -o $(BIN)/resume-server ./cmd/server
+	CGO_ENABLED=$(CGO_ENABLED) $(GO) build -trimpath -buildvcs=false -o $(BIN)/resume-build ./cmd/build
+	CGO_ENABLED=$(CGO_ENABLED) $(GO) build -trimpath -buildvcs=false -o $(BIN)/resume-server ./cmd/server
 
 dist: build
 	@$(BIN)/resume-build --dist $(DIST)
@@ -57,5 +73,34 @@ fmt:
 vet:
 	@$(GO) vet ./...
 
+# -- corpus (Phase 4, docs/phase-4-corpus.md) --------------------------------
+#
+# The corpus is data, not a build artefact: it lives in data/corpus/ (gitignored)
+# and in Qdrant. RESUME_QDRANT_URL defaults to http://127.0.0.1:6333 and
+# RESUME_EMBED_PROVIDER defaults to local-hashing; production sets both in the
+# environment, never in this file.
+
+CORPUS := $(PYTHON) -m corpus.cli
+
+corpus: corpus-rebuild
+
+corpus-rebuild:
+	@$(CORPUS) rebuild
+
+corpus-sync:
+	@$(CORPUS) sync
+
+corpus-audit:
+	@$(CORPUS) audit --fail-on-findings
+
+corpus-verify:
+	@$(CORPUS) verify
+
+corpus-demo:
+	@$(CORPUS) demo-filter --query "distributed audio endpoints" --area edge
+
+corpus-test:
+	@$(PYTHON) -m unittest discover -s corpus/tests -t .
+
 clean:
 	@rm -rf $(BIN) $(DIST)

deploy/compose.yml

@@ -12,7 +12,14 @@
 #
 # `curl http://127.0.0.1:8096/healthz` must answer with static ready.
 
-name: ai-resume
+# The compose project name is deliberately not `ai-resume`: /home/sam/deployment/
+# ai-resume on .13 already runs a compose project by that name (backend + db on
+# the ai-mesh network). Sharing the name would make this site's containers show
+# up as orphans in that project and vice versa, so anything running `compose
+# down --remove-orphans` under either project could stop the other. The image
+# tag stays ai-resume:local (Phase 3 fixes it); only the project namespace is
+# distinct.
+name: ai-resume-site
 
 services:
   resume:
@@ -43,6 +50,20 @@ services:
       retries: 3
       start_period: 5s
 
+# The project network gets an explicit, small subnet. The host's docker daemon
+# has every default address pool allocated by other projects ("all predefined
+# address pools have been fully subnetted"), so an implicit compose network
+# cannot be created. Pinning /28 of RFC1918 space that no other bridge or route
+# on .13 uses keeps this deploy independent of the host's pool exhaustion and
+# does not touch any other container. Single-service stack: two addresses is
+# plenty.
+networks:
+  default:
+    ipam:
+      config:
+        - subnet: 10.89.0.0/28
+          gateway: 10.89.0.1
+
 # Phase 4/5 add at most three more containers (Qdrant, Prefect worker, query
 # service) inside the 4-container and 1.0 GiB budget in AGENTS.md §4.3. Mode A
 # needs none of them and must keep working when they are stopped (test A1).

deploy/deploy.sh

@@ -0,0 +1,390 @@
+#!/usr/bin/env bash
+# deploy.sh — release, deploy and roll back the Mode A site (docs/phase-3-deploy.md §3.1).
+#
+#   ./deploy/deploy.sh                  build, test, stage a release, flip `current`,
+#                                       start the container, gate on /healthz
+#   ./deploy/deploy.sh --rollback       put the previous release back, in one command
+#   ./deploy/deploy.sh --status         what is live, what is previous, is it healthy
+#   ./deploy/deploy.sh --release-dir D  deploy an already-built release directory
+#                                       (copied into releases/ first; used by the
+#                                       rollback rehearsal below)
+#
+# Layout on the runtime host — the release directory, not the image tag, is the
+# unit that runs, so a rollback cannot publish bytes that were never tested:
+#
+#   /home/sam/deployment/resume/
+#     releases/<utc-timestamp>-<git-sha>/{bin/resume-server,dist/,release.json}
+#     current   -> releases/<…>   what the container is running
+#     previous  -> releases/<…>   what --rollback restores
+#
+# A deploy is: build → test → stage → flip `current` → build the image from that
+# release directory → `compose up -d` → `curl /healthz` until ready. Any failure
+# after the flip puts `current` and the container back on the previous release
+# and exits non-zero. No step is a model decision (AGENTS.md §4.6); this script
+# is the only thing that publishes.
+#
+# Rollback rehearsal (Definition of Done: "a deliberate bad build proves rollback"):
+#
+#   good=$(readlink ~/deployment/resume/current)
+#   bad=$(mktemp -d) && mkdir -p "$bad/bin" "$bad/dist"
+#   printf '#!/bin/sh\nexit 1\n' >"$bad/bin/resume-server"   # binary that cannot start
+#   chmod +x "$bad/bin/resume-server"
+#   cp -a ~/deployment/resume/"$good"/dist/. "$bad/dist/"   # valid pages
+#   ./deploy/deploy.sh --release-dir "$bad"                 # expect exit 1
+#   readlink ~/deployment/resume/current                    # still $good
+#
+# Run it on the runtime host (.13) from a checkout of this repository. It never
+# reads content/ and never calls a model.
+
+set -Eeuo pipefail
+
+APP=ai-resume                  # image tag (fixed by Phase 3 §3.2)
+PROJECT=ai-resume-site         # compose project; distinct from the older
+                               # /home/sam/deployment/ai-resume project on .13
+PORT=8096
+HEALTH_PATH=/healthz
+
+ROOT=${RESUME_DEPLOY_ROOT:-/home/sam/deployment/resume}
+RELEASES=$ROOT/releases
+CURRENT=$ROOT/current
+PREVIOUS=$ROOT/previous
+
+KEEP=${RESUME_KEEP_RELEASES:-5}            # release directories kept on disk
+HEALTH_TRIES=${RESUME_HEALTH_TRIES:-40}    # seconds to wait for /healthz
+
+REPO=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)
+COMPOSE=$REPO/deploy/compose.yml
+DOCKERFILE=$REPO/deploy/Dockerfile
+
+MODE=deploy
+RELEASE_DIR_OVERRIDE=
+
+log()  { printf '%s  %s
+' "$(date -u +%H:%M:%SZ)" "$*" >&2; }
+warn() { printf '%s  WARN  %s
+' "$(date -u +%H:%M:%SZ)" "$*" >&2; }
+die()  { printf '%s  FAIL  %s
+' "$(date -u +%H:%M:%SZ)" "$*" >&2; exit 1; }
+
+on_err() {
+	local rc=$? line=$1
+	printf '%s  FAIL  line %s exited %s
+' "$(date -u +%H:%M:%SZ)" "$line" "$rc" >&2
+	exit "$rc"
+}
+trap 'on_err $LINENO' ERR
+
+usage() {
+	sed -n '2,13p' "${BASH_SOURCE[0]}" | sed 's/^# \{0,1\}//'
+	exit "${1:-0}"
+}
+
+while [ $# -gt 0 ]; do
+	case $1 in
+	--rollback)    MODE=rollback ;;
+	--status)      MODE=status ;;
+	--release-dir) shift; RELEASE_DIR_OVERRIDE=${1:-} ;;
+	--keep)        shift; KEEP=${1:-5} ;;
+	-h|--help)     usage 0 ;;
+	*)             printf 'unknown argument: %s
+' "$1" >&2; usage 1 ;;
+	esac
+	shift
+done
+
+# ---------------------------------------------------------------- helpers ---
+
+compose() { docker compose -f "$COMPOSE" -p "$PROJECT" "$@"; }
+
+current_target()  { readlink -- "$CURRENT" 2>/dev/null || true; }
+previous_target() { readlink -- "$PREVIOUS" 2>/dev/null || true; }
+
+# flip <relative-path-under-ROOT> — replace the symlink atomically. A reader sees
+# either the old release or the new one, never a missing link.
+flip() {
+	ln -sfn "$1" "$CURRENT.tmp"
+	mv -Tf "$CURRENT.tmp" "$CURRENT"
+}
+
+release_name_of() { basename "$1"; }
+
+# The tag deploy/compose.yml runs. Releases are distinguished by content, not by
+# tag, so compose.yml keeps its fixed image name.
+image_name() { printf '%s:local' "$APP"; }
+
+# The port must be ours, or free. 8095 belongs to offsite.lab.
+check_port() {
+	local listening
+	listening=$(ss -ltnH "sport = :$PORT" 2>/dev/null || true)
+	if [ -n "$listening" ]; then
+		if [ -z "$(compose ps -q resume 2>/dev/null)" ]; then
+			printf '%s
+' "$listening" >&2
+			die "port $PORT is held by something that is not $APP; pick the next free port and record it in reference/stack.md"
+		fi
+		log "port $PORT is held by our own container (expected on a redeploy)"
+	fi
+}
+
+check_tools() {
+	command -v docker >/dev/null || die "docker is not on PATH"
+	docker compose version >/dev/null 2>&1 || die "docker compose v2 is not available"
+	command -v curl >/dev/null || die "curl is not on PATH"
+	command -v ss >/dev/null || die "ss (iproute2) is not on PATH"
+	mkdir -p "$RELEASES"
+}
+
+memory_report() {
+	local avail
+	avail=$(awk '/^MemAvailable:/ {print int($2/1024)}' /proc/meminfo)
+	log "host memory available: ${avail} MiB — the container cap is 120 MiB; .13 is memory-tight by design"
+	if [ "${avail:-0}" -lt 512 ]; then
+		warn "under 512 MiB available; the Go build may push this host into swap"
+	fi
+}
+
+# --------------------------------------------------------------- build ------
+
+build_and_test() {
+	log "build + test in $REPO"
+	(
+		cd "$REPO"
+		rm -rf dist
+		if command -v nix >/dev/null 2>&1; then
+			nix develop . -c bash -c 'make validate test dist'
+		elif command -v templ >/dev/null 2>&1 && command -v go >/dev/null 2>&1; then
+			make validate test dist
+		else
+			echo "no toolchain: neither 'nix develop' nor templ+go is available" >&2
+			exit 1
+		fi
+	)
+	[ -f "$REPO/bin/resume-server" ] || die "build produced no bin/resume-server"
+	[ -f "$REPO/dist/index.html" ]   || die "build produced no dist/index.html"
+	log "build ok: $(jq -r '"\(.pages) pages, \(.documents) documents, \(.fragments) fragments"' "$REPO/dist/build.json" 2>/dev/null || echo 'dist/build.json unreadable')"
+}
+
+# -------------------------------------------------------------- release -----
+
+write_manifest() {
+	local dir=$1 sha dirty
+	sha=$(git -C "$REPO" rev-parse HEAD 2>/dev/null || echo unknown)
+	dirty=false
+	git -C "$REPO" diff --quiet 2>/dev/null || dirty=true
+	cat >"$dir/release.json" <<JSON
+{
+  "release": "$(basename "$dir")",
+  "image": "$(image_name)",
+  "git_sha": "$sha",
+  "git_dirty": $dirty,
+  "built_at": "$(date -u +%Y-%m-%dT%H:%M:%SZ)",
+  "host": "$(hostname)",
+  "pages": $(jq -r '.pages // 0' "$REPO/dist/build.json" 2>/dev/null || echo 0),
+  "documents": $(jq -r '.documents // 0' "$REPO/dist/build.json" 2>/dev/null || echo 0)
+}
+JSON
+}
+
+stage_release() {
+	local name dest sha
+	sha=$(git -C "$REPO" rev-parse HEAD 2>/dev/null || echo unknown)
+	name=$(date -u +%Y%m%dT%H%M%SZ)-${sha:0:7}
+	dest=$RELEASES/$name
+
+	mkdir -p "$dest/bin" "$dest/dist"
+	install -m 0755 "$REPO/bin/resume-server" "$dest/bin/resume-server"
+	cp -a "$REPO/dist/." "$dest/dist/"
+	write_manifest "$dest"
+	printf '%s
+' "$dest"
+}
+
+# Copy an externally built release into releases/ so that every deployable
+# directory lives under exactly one root and `current` never dangles.
+adopt_release() {
+	local src dest
+	src=$(cd "$1" && pwd)
+	[ -f "$src/bin/resume-server" ] || die "$src has no bin/resume-server"
+	[ -f "$src/dist/index.html" ]   || die "$src has no dist/index.html"
+	dest=$RELEASES/$(date -u +%Y%m%dT%H%M%SZ)-manual
+	mkdir -p "$dest"
+	cp -a "$src/." "$dest/"
+	write_manifest "$dest"
+	printf '%s
+' "$dest"
+}
+
+# ---------------------------------------------------------------- image -----
+
+build_image() {
+	log "docker build from $1"
+	docker build --file "$DOCKERFILE" --tag "$(image_name)" "$1" 1>&2
+}
+
+# ------------------------------------------------------------------ run -----
+
+start() {
+	log "docker compose up -d ($1)"
+	compose up -d --no-build --force-recreate 1>&2
+}
+
+wait_healthy() {
+	local i body
+	for i in $(seq 1 "$HEALTH_TRIES"); do
+		if body=$(curl -fsS --max-time 3 "http://127.0.0.1:$PORT$HEALTH_PATH" 2>/dev/null); then
+			if printf '%s' "$body" | grep -Eq '"status"[[:space:]]*:[[:space:]]*"ok"'; then
+				log "health gate passed after ${i}s"
+				return 0
+			fi
+		fi
+		sleep 1
+	done
+	warn "health gate failed after ${HEALTH_TRIES}s; last response:"
+	curl -sS --max-time 3 "http://127.0.0.1:$PORT$HEALTH_PATH" >&2 || true
+	compose logs --tail 40 resume >&2 || true
+	return 1
+}
+
+# Definition-of-Done evidence, checked on every deploy instead of by hand:
+# mem_limit == memswap_limit == the value declared in compose.yml, and the port
+# published on 127.0.0.1 only.
+assert_shape() {
+	local cid mem swap ip declared
+	declared=$(awk '/^[[:space:]]*mem_limit:/ {gsub(/[^0-9]/, "", $2); print $2}' "$COMPOSE")
+	cid=$(compose ps -q resume 2>/dev/null || true)
+	[ -n "$cid" ] || die "no container for service 'resume'"
+	mem=$(docker inspect -f '{{.HostConfig.Memory}}' "$cid")
+	swap=$(docker inspect -f '{{.HostConfig.MemorySwap}}' "$cid")
+	[ "$mem" = "$swap" ] || die "mem_limit ($mem) != memswap_limit ($swap)"
+	[ "$mem" = "$((declared * 1024 * 1024))" ] || die "mem_limit is $mem, expected ${declared} MiB"
+	ip=$(docker inspect -f '{{range $p, $b := .HostConfig.PortBindings}}{{range $b}}{{.HostIp}} {{end}}{{end}}' "$cid" | xargs)
+	[ "$ip" = "127.0.0.1" ] || die "published on '${ip}', expected 127.0.0.1 only"
+	log "shape ok: mem_limit == memswap_limit == ${declared} MiB, published on 127.0.0.1:$PORT"
+}
+
+deploy_release() {
+	local dir old name
+	dir=$1
+	name=$(release_name_of "$dir")
+	[ -d "$dir" ] || die "release directory does not exist: $dir"
+	[ -f "$dir/bin/resume-server" ] || die "$dir has no bin/resume-server"
+	[ -f "$dir/dist/index.html" ]   || die "$dir has no dist/index.html — a build that cannot serve a landing page is not a release"
+
+	build_image "$dir"
+	old=$(current_target)
+
+	# The flip happens before the container change, so `current` always describes
+	# what is being started. The release it replaced becomes `previous`.
+	flip "releases/$name"
+	if [ -n "$old" ] && [ "$old" != "releases/$name" ]; then
+		ln -sfn "$old" "$PREVIOUS"
+		log "previous -> $old"
+	fi
+
+	if start "$name" && wait_healthy && assert_shape; then
+		printf '%s
+' "$(date -u +%Y-%m-%dT%H:%M:%SZ)  deploy releases/$name ok" >>"$ROOT/deploy.log"
+		log "deployed $name"
+		prune
+		return 0
+	fi
+
+	if [ -z "$old" ] || [ "$old" = "releases/$name" ]; then
+		warn "first deploy failed and there is no previous release; leaving the container down"
+		compose down >&2 || true
+		rm -f "$CURRENT"
+		return 1
+	fi
+
+	warn "deploy of $name failed; restoring $old"
+	flip "$old"
+	build_image "$ROOT/$old" || die "could not rebuild the previous image; container state unknown"
+	if start "$old" && wait_healthy && assert_shape; then
+		printf '%s
+' "$(date -u +%Y-%m-%dT%H:%M:%SZ)  rolled back to $old after failed deploy of releases/$name" >>"$ROOT/deploy.log"
+		die "deploy of releases/$name failed; rolled back to $old (the failed release is kept for inspection)"
+	fi
+	die "deploy of releases/$name failed AND rollback to $old failed — container state is unknown; run '$0 --status' and read $ROOT/deploy.log"
+}
+
+do_rollback() {
+	local cur prev
+	cur=$(current_target)
+	prev=$(previous_target)
+	[ -n "$prev" ] || die "no previous release recorded; nothing to roll back to"
+	[ "$prev" != "$cur" ] || die "previous and current are the same release ($cur); nothing to roll back"
+	[ -d "$ROOT/$prev" ] || die "previous release directory is missing: $ROOT/$prev"
+
+	log "rolling back: $cur -> $prev"
+	build_image "$ROOT/$prev"
+	flip "$prev"
+	if start "$prev" && wait_healthy && assert_shape; then
+		[ -n "$cur" ] && ln -sfn "$cur" "$PREVIOUS"
+		printf '%s
+' "$(date -u +%Y-%m-%dT%H:%M:%SZ)  rollback $cur -> $prev" >>"$ROOT/deploy.log"
+		log "rolled back to $prev; $cur is now previous"
+		return 0
+	fi
+
+	warn "rollback to $prev failed; returning to $cur"
+	flip "$cur"
+	build_image "$ROOT/$cur" || die "could not rebuild $cur; container state unknown"
+	start "$cur" && wait_healthy || die "return to $cur failed; container state unknown"
+	die "rollback to $prev failed; $cur was restored"
+}
+
+# Keep the newest KEEP releases plus current and previous, nothing else.
+prune() {
+	local cur prev name dir
+	cur=$(current_target); prev=$(previous_target)
+	for dir in $(ls -1dt "$RELEASES"/*/ 2>/dev/null | tail -n +"$((KEEP + 1))"); do
+		name="releases/$(basename "$dir")"
+		if [ "$name" = "$cur" ] || [ "$name" = "$prev" ]; then continue; fi
+		rm -rf -- "$dir"
+		log "pruned $name"
+	done
+}
+
+do_status() {
+	local cur prev body
+	cur=$(current_target); prev=$(previous_target)
+	body=$(curl -fsS --max-time 3 "http://127.0.0.1:$PORT$HEALTH_PATH" 2>/dev/null || true)
+	printf 'root      %s
+' "$ROOT"
+	printf 'current   %s
+' "${cur:-<none>}"
+	printf 'previous  %s
+' "${prev:-<none>}"
+	if [ -n "$body" ]; then
+		printf 'health    %s
+' "$(printf '%s' "$body" | jq -c '{status, pages: .static.pages, search: .search.ready}' 2>/dev/null || printf '%s' "$body")"
+	else
+		printf 'health    unreachable
+'
+	fi
+	compose ps || true
+}
+
+# ------------------------------------------------------------------ main ----
+
+case $MODE in
+status)
+	do_status
+	;;
+rollback)
+	check_tools
+	do_rollback
+	;;
+deploy)
+	check_tools
+	check_port
+	memory_report
+	if [ -n "$RELEASE_DIR_OVERRIDE" ]; then
+		deploy_release "$(adopt_release "$RELEASE_DIR_OVERRIDE")"
+	else
+		build_and_test
+		deploy_release "$(stage_release)"
+	fi
+	log "live: $(current_target)"
+	;;
+esac