diff --git a/BACKLOG.md b/BACKLOG.md
index e7e7f93..2cc4f73 100644
--- a/BACKLOG.md
+++ b/BACKLOG.md
@@ -26,9 +26,12 @@ Two single-writer sections (§6.1): Builder edits only `## Build backlog`; Adver
       CLAIMED 2026-05-26, awaiting Adversary.
 
 ### M2 — Drone online
-- [ ] Drone server + exec runner via Nix; Gitea OAuth app
-- [ ] hello-world .drone.yml runs green; logs in Drone UI
-- [ ] Gate: M2 — push to cc-ci triggers visible green build
+- [x] Drone server (coop-cloud recipe, reconcile oneshot) + exec runner via Nix; Gitea OAuth app.
+      Server healthz 200 via gateway; runner polling (capacity=2, type=exec).
+- [x] hello-world .drone.yml runs green; logs visible (Drone UI + API). Build #1 success: clone +
+      hello (echo/whoami=root/abra 0.13.0-beta/swarm=active), both exit 0.
+- [x] Gate: M2 — push to cc-ci triggers visible green build → CLAIMED 2026-05-26, awaiting Adversary.
+      OAuth link via one-time `scripts/bootstrap-drone-oauth.sh` (documented in install.md §2).
 
 ### M3 — Comment bridge
 - [ ] comment-bridge service: HMAC verify, !testme exact match, collaborator check, Drone API call
diff --git a/JOURNAL.md b/JOURNAL.md
index 51ca6cc..6c49392 100644
--- a/JOURNAL.md
+++ b/JOURNAL.md
@@ -245,3 +245,24 @@ cc-ci repo activated in Drone, which requires the bot's Gitea OAuth login (brows
 Drone a Gitea token (to sync repos + set the push webhook). Next tick: script the OAuth login to mint
 a Drone token, activate cc-ci, push .drone.yml, confirm green. (DRONE_USER_CREATE made autonomic-bot
 the admin.)
+
+## 2026-05-26 — M2 GATE MET: green build via push (Drone + exec runner)
+
+**Drone↔Gitea OAuth (scripted, the one manual bootstrap):** logged the bot into Gitea (CSRF cookie
+→ form), drove Drone `/login` → Gitea authorize consent (POST `/login/oauth/grant` with _csrf+state+
+granted=true) → code callback → Drone `_session_`. Captured the whole flow in
+`scripts/bootstrap-drone-oauth.sh` (reads bot creds from env; documented in install.md §2; one-time,
+token persists in Drone's data volume).
+
+**Repo activation:** `GET /api/user` → autonomic-bot admin=true; `GET /api/user/repos?latest=true`
+synced 12 repos; `POST /api/repos/recipe-maintainers/cc-ci` → active=true, config_path .drone.yml
+(sets the Gitea push webhook).
+
+**Green build:** added `.drone.yml` (exec pipeline), pushed (0d89e28). Polled
+`/api/repos/recipe-maintainers/cc-ci/builds` → build #1 pending→running→**success**. Steps:
+clone success exit 0; hello success exit 0 — log shows `whoami=root`, `abra 0.13.0-beta-06a57de`,
+`swarm=active` (ran on the host via the exec runner). **M2 gate met; CLAIMED.**
+
+**Next:** M3 — comment-bridge service: Gitea issue_comment webhook → verify HMAC + `!testme` exact +
+collaborator → resolve PR head repo/SHA → trigger a parameterized Drone build; post a PR comment with
+the run link. Need a Drone API token for the bridge (mint from the bot's Drone account).
diff --git a/STATUS.md b/STATUS.md
index 53a4824..d92c074 100644
--- a/STATUS.md
+++ b/STATUS.md
@@ -1,8 +1,8 @@
 # STATUS — cc-ci Builder
 
-**Phase:** M1 complete & CLAIMED → starting M2 (Drone). M0 PASS (Adversary @21:35Z). M1 awaiting verdict.
-**In-flight:** M2 — Drone server + exec runner via Nix + Gitea OAuth app (first M2 task).
-**Last updated:** 2026-05-26 (M1 claimed)
+**Phase:** M2 complete & CLAIMED → starting M3 (comment bridge). M0+M1 PASS (Adversary). M2 awaiting verdict.
+**In-flight:** M3 — comment-bridge service (!testme webhook → Drone build trigger).
+**Last updated:** 2026-05-26 (M2 claimed, green build #1)
 
 ## Gates
 - **Gate: M0 — CLAIMED, awaiting Adversary** (2026-05-26). Evidence: flake rebuilds cc-ci from repo
@@ -16,7 +16,12 @@
   deployed by hand → HTTP 200 over HTTPS via gateway at cchtml1.ci.commoninternet.net with the
   wildcard cert; torn down clean (services/volumes/secrets/containers all 0). Repro:
   `scripts/deploy-proxy.sh` + `abra app new/deploy/undeploy`. Starting M2 as independent work; will
-  not flip M2's gate until M1 shows PASS.
+  not flip M2's gate until M1 shows PASS. → **M1 PASS** @2026-05-26T22:20Z.
+- **Gate: M2 — CLAIMED, awaiting Adversary** (2026-05-26). Evidence: Drone server (coop-cloud recipe,
+  reconcile oneshot, Gitea SSO) healthz 200 via gateway; exec runner polling (capacity=2). cc-ci repo
+  activated (push webhook). Pushing `.drone.yml` triggered build #1 → **success** (clone + hello exec
+  steps, exit 0; ran abra/docker on the host). Repro: `nixos-rebuild switch` + one-time
+  `scripts/bootstrap-drone-oauth.sh`. Starting M3 as independent work; won't flip M3 gate until M2 PASS.
 
 ## Blocked
 - (none)
diff --git a/docs/install.md b/docs/install.md
index 20d29f4..ea6c24c 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -49,7 +49,22 @@ curl -ks --resolve drone.ci.commoninternet.net:443:<gateway-ip> \
 > it survives a momentary drop, and **use the absolute flake path** (systemd units run with cwd `/`):
 > `systemd-run --unit=ccci-sw --property=Type=oneshot nixos-rebuild switch --flake /root/cc-ci#cc-ci`
 
-## 2. (later milestones) comment-bridge, dashboard, recipe enrollment
+## 2. One-time: link Drone ↔ Gitea (OAuth grant)
+
+The only manual post-rebuild step. Drone needs the bot's Gitea OAuth token (granted by an
+interactive login) before it can sync/clone repos; this can't be Nix-declared without putting the
+bot password on the box. The token then persists in Drone's `data` volume.
+
+```sh
+GITEA_USERNAME=autonomic-bot GITEA_PASSWORD=… bash scripts/bootstrap-drone-oauth.sh
+# -> "drone login ok (admin=true)" / "repo recipe-maintainers/cc-ci active=true"
+```
+
+Verify a build runs green: push any commit to the cc-ci repo and watch
+`https://drone.ci.commoninternet.net` (or the API) — the push webhook (set on activation) triggers
+the `.drone.yml` self-test on the exec runner.
+
+## 3. (later milestones) comment-bridge, dashboard, recipe enrollment
 
 See `docs/enroll-recipe.md` (D5), `docs/secrets.md` (D6), `docs/runbook.md`. Each new piece of infra
 is added as another idempotent reconcile oneshot, so this install stays a single `nixos-rebuild`.
diff --git a/scripts/bootstrap-drone-oauth.sh b/scripts/bootstrap-drone-oauth.sh
new file mode 100644
index 0000000..609a27b
--- /dev/null
+++ b/scripts/bootstrap-drone-oauth.sh
@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+# One-time Drone<->Gitea OAuth bootstrap (the ONLY manual post-`nixos-rebuild` step).
+#
+# Drone can only sync/clone repos once it holds the bot's Gitea OAuth token, which is granted by
+# an interactive OAuth login. This cannot be Nix-declared without putting the bot's Gitea password
+# on cc-ci, so it's a one-time operator step. The token then persists in Drone's `data` volume, so
+# reconcile redeploys keep working. Re-run only if that volume is wiped.
+#
+# Usage (run ON cc-ci, as root):
+#   GITEA_USERNAME=autonomic-bot GITEA_PASSWORD=… bash scripts/bootstrap-drone-oauth.sh
+# Optionally ACTIVATE a repo: REPO=recipe-maintainers/cc-ci (default).
+set -euo pipefail
+: "${GITEA_USERNAME:?set GITEA_USERNAME}"; : "${GITEA_PASSWORD:?set GITEA_PASSWORD}"
+GITEA="${GITEA:-https://git.autonomic.zone}"
+DRONE="${DRONE:-https://drone.ci.commoninternet.net}"
+CLIENT_ID="${CLIENT_ID:-ab4cdb9d-ee96-4867-875f-87384505fc52}"
+REPO="${REPO:-recipe-maintainers/cc-ci}"
+RES=(--resolve "drone.ci.commoninternet.net:443:127.0.0.1")
+export PATH=/run/current-system/sw/bin:"$PATH"
+
+cj=$(mktemp); dj=$(mktemp); az=$(mktemp)
+trap 'rm -f "$cj" "$dj" "$az"' EXIT
+
+# 1) Gitea web login (CSRF cookie -> form field).
+curl -s -c "$cj" "$GITEA/user/login" -o /dev/null
+gcsrf=$(awk '/_csrf/{v=$NF} END{print v}' "$cj")
+curl -s -b "$cj" -c "$cj" -o /dev/null \
+  --data-urlencode "_csrf=$gcsrf" \
+  --data-urlencode "user_name=$GITEA_USERNAME" \
+  --data-urlencode "password=$GITEA_PASSWORD" \
+  "$GITEA/user/login"
+
+# 2) Drone /login -> Gitea authorize URL.
+loc=$(curl -sk -c "$dj" -o /dev/null -D - "${RES[@]}" "$DRONE/login" \
+  | awk 'tolower($1)=="location:"{print $2}' | tr -d '\r')
+curl -sk -b "$cj" -c "$cj" -o "$az" "$loc"
+
+# 3) Grant consent -> code callback -> complete Drone login (sets Drone session).
+acsrf=$(grep -oE 'name="_csrf" value="[^"]*"' "$az" | head -1 | sed -E 's/.*value="([^"]*)".*/\1/')
+state=$(grep -oE 'name="state" value="[^"]*"' "$az" | head -1 | sed -E 's/.*value="([^"]*)".*/\1/')
+cb=$(curl -sk -b "$cj" -c "$cj" -o /dev/null -D - \
+  --data-urlencode "_csrf=$acsrf" --data-urlencode "client_id=$CLIENT_ID" \
+  --data-urlencode "state=$state" --data-urlencode "scope=" --data-urlencode "nonce=" \
+  --data-urlencode "redirect_uri=$DRONE/login" --data-urlencode "granted=true" \
+  "$GITEA/login/oauth/grant" | awk 'tolower($1)=="location:"{print $2}' | tr -d '\r')
+curl -sk -b "$dj" -c "$dj" -o /dev/null -L "${RES[@]}" "$cb"
+
+# 4) Verify + sync + activate the repo.
+admin=$(curl -sk -b "$dj" "${RES[@]}" "$DRONE/api/user" | jq -r '.admin')
+echo "drone login ok (admin=$admin)"
+curl -sk -b "$dj" "${RES[@]}" "$DRONE/api/user/repos?latest=true" >/dev/null
+active=$(curl -sk -b "$dj" "${RES[@]}" -X POST "$DRONE/api/repos/$REPO" | jq -r '.active')
+echo "repo $REPO active=$active"