R-840: the config bundle — a signed agent_config_update brings a box's root-owned files (sudoers, wrappers, units)

felhom-os-apply gains mode 'bundle' (signed, verified by the wrapper itself against the root-owned
signers file — or, when that file is missing, only the installer's pinned key, which it then creates)
and --install-bundle (the installer's root entry). BUNDLE_FILES is the one table of paths; every check
(visudo, sh/bash -n, python, unit sections, RuntimeDirectory guard, nft -c, the route itself) runs
before the first write; a failed write or self-check puts every previous copy back. The trust root is
never a bundle path (R17). scripts/build-config-bundle.py builds it reproducibly; release-agent.sh
publishes it beside the binary. The agent reports the bundle record in system.config_bundle.
felhom-opsign signs agent_config_update. 43 wrapper tests (22 mutants red), Go executor tests.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

scripts/release-agent.sh

@@ -100,6 +100,15 @@ built_ver="$("$BIN" --version 2>/dev/null | awk '{print $2}')"
 BUILT_SHA="$(sha256sum "$BIN" | awk '{print $1}')"
 log "built ok: sha256 $BUILT_SHA"
 
+# ── 3b. The config bundle (R-840) ───────────────────────────────────────────────────────────────
+# Every root-owned file the installer's step 5 writes (sudoers, wrappers, units), as ONE file beside the binary. A box
+# takes it by a signed agent_config_update; a new box from the installer. Reproducible: same source → same sha.
+BUNDLE="$(mktemp -t felhom-config-bundle-XXXXXX)"
+trap 'rm -f "$BIN" "$BUNDLE"' EXIT
+BUNDLE_SHA="$(python3 "$REPO_ROOT/scripts/build-config-bundle.py" "$VERSION" "$BUNDLE")" || die "config bundle build failed"
+[[ "$BUNDLE_SHA" =~ ^[0-9a-f]{64}$ ]] || die "config bundle build printed no sha256"
+log "config bundle built: sha256 $BUNDLE_SHA"
+
 # ── 4. Tag LOCALLY (the push comes after the publish — see step 6) ──────────────────────────────
 #
 # THE ORDER CHANGED, AND ONLY THE PUSH MOVED (R-188, 2026-08-03).
@@ -153,6 +162,12 @@ if ! bash "$REPO_ROOT/scripts/publish-agent.sh" "$VERSION" "$BIN"; then
     die "publish failed"
 fi
 
+# ── 5b. Publish the config bundle beside the binary (same package version, same credentials) ──
+BURL="$GITEA_BASE/api/packages/$GITEA_OWNER/generic/felhom-agent/$VERSION/felhom-config-bundle.json"
+bcode="$(curl -sS -o /dev/null -w '%{http_code}' -u "${GITEA_USER}:${GITEA_TOKEN}" -X PUT --upload-file "$BUNDLE" "$BURL")"
+[[ "$bcode" == "201" || "$bcode" == "200" ]] || die "config bundle upload failed: HTTP $bcode (the binary IS published; re-run only the bundle upload)"
+log "config bundle published (HTTP $bcode)"
+
 # ── 6. Push the tag, now that the package exists ────────────────────────────────────────────────
 # This is the step that makes the release VISIBLE — to CI, and to every `raw/tag/v<version>/` fetch
 # the installer makes. It runs last of the two so CI can never see a tag whose package is not there.
@@ -193,6 +208,11 @@ DL_SHA="$(sha256sum "$DL" | awk '{print $1}')"
 [[ "$DL_SHA" == "$BUILT_SHA" ]] \
     || die "published sha $DL_SHA != built sha $BUILT_SHA — the artifact is not what was built"
 
+BDL="$(mktemp -t felhom-config-bundle-dl-XXXXXX)"
+trap 'rm -f "$BIN" "$DL" "$BUNDLE" "$BDL"' EXIT
+curl -fsS -o "$BDL" "$BURL" || die "round-trip GET of the config bundle failed"
+[[ "$(sha256sum "$BDL" | awk '{print $1}')" == "$BUNDLE_SHA" ]] || die "published config bundle sha != built sha"
+
 # The tag must also serve the configs the installer will fetch from it.
 cfg_code="$(curl -fsS -o /dev/null -w '%{http_code}' \
     "$GITEA_BASE/$GITEA_OWNER/felhom-agent/raw/tag/$TAG/configs/felhom-agent.service" 2>/dev/null || true)"
@@ -206,6 +226,7 @@ cat <<EOF
     version : $VERSION
     tag     : $TAG
     sha256  : $BUILT_SHA
+    bundle  : $BUNDLE_SHA   (felhom-config-bundle.json — vouch it with the agent)
 
   NOT VOUCHED. Vouching is what points machines at this version and stays your deliberate act:
   hub operator UI → Configs → Day-0 artifacts. Until then boxes keep installing the previous one.