# Slice 1 identities: Gitea bots, Vikunja bots and their tokens

Jason runs this guide once per business, by hand (PRD REQ-CRED-1, round
3, 1A and 2A). It creates every service identity slice 1 uses and writes
each token to a 0600 file the broker reads. Nothing in v1 mints these
tokens for you. Brief: `docs/plans/2026-10-04_slice-1.md`, row SR.

Plan on about 20 minutes with an existing Vikunja, and 30 if you start
the bundled one.

## Rules for the whole guide

- A token never appears on a command line, in a URL, in shell history,
  in a chat or in the repository. The commands below read secrets from
  files or a password prompt, and write tokens straight to files.
- Run every step in one shell with `umask 077` set, so every file you
  create is 0600 and every directory 0700.
- To check a token file, use `stat`, never `cat`.
- The Vikunja owner password and the Gitea admin login are the
  high-value secrets. They are used only in this guide, and never reach
  the broker or an agent.

## 0. Set up the shell

```sh
umask 077
BIZ=mosaic-stack
S="$HOME/.config/mosaic-dev/secrets/$BIZ"   # token directory, outside the repo
mkdir -p "$S" && chmod 700 "$S"
VK=https://vikunja.example                   # your Vikunja base URL, no trailing slash
GITEA=https://git.example                    # your Gitea base URL
EXP=$(date -u -d '+90 days' +%Y-%m-%dT00:00:00Z)   # Vikunja token expiry
```

Write `EXP` down. It goes in the business file as each Vikunja token's
`expires`.

## 1. Gitea: four bot users and their tokens

Gitea tokens don't expire, and the HTTP route for creating one needs a
password, so this part uses the web UI.

1. As a site admin, create the users `pm-bot`, `cto-bot`, `coder-bot`
   and `reviewer-bot` (Site Administration, User Accounts, Create). Give
   each a long random password, which you won't need again after step 3.
   None of them is an admin.
2. In `mosaicstack/stack`, add each bot as a collaborator:

   | Bot | Repository access |
   |---|---|
   | pm-bot | Write (labels, assignees and closing need it) |
   | cto-bot | Write |
   | coder-bot | Write |
   | reviewer-bot | Read |

   No bot is on a protected branch's push or merge allowlist. Pushing to
   a protected branch is a gated action, and it stays Jason's.
3. Log in as each bot, go to Settings, Applications, and generate one
   token named `mosaic-stack-<role>-<date>` with these scopes:

   | Bot | Scopes |
   |---|---|
   | pm-bot | `write:issue`, `read:repository`, `read:user` |
   | cto-bot | `write:issue`, `write:repository`, `read:user` |
   | coder-bot | `write:issue`, `write:repository`, `read:user` |
   | reviewer-bot | `write:issue`, `write:repository`, `read:user` |

   Leave every other scope unset, and set none to "public only".
   Reviewer-bot's `write:repository` is there because Gitea files pull
   request reviews under the repository scope. Its Read collaborator
   access is what stops it pushing. Row SR's review checks that before
   anyone relies on it.
4. Copy each token into its file with an editor, never `echo`:
   `$S/pm-gitea.token`, `$S/cto-gitea.token`, `$S/coder-gitea.token`,
   `$S/reviewer-gitea.token`. One line, the token only.
5. Log out of each bot account. Record today's date as each Gitea
   token's `rotateBy` base. Section 5 has the rotation schedule.

## 2. Vikunja: the instance and the owner account

You need Vikunja 2.7.0 or later, with local login on and an owner account
that is yours.

### Path A, an existing instance

Check that `curl -s "$VK/api/v1/info"` reports `v2.7.0` or later. Use your
existing account as the owner.

### Path B, the bundled instance

Row S3 ships `packages/tasks/deploy/vikunja/` for this. Until it lands,
these commands start the same pinned image the probes used, bound to
127.0.0.1:

```sh
VD="$HOME/.local/share/mosaic-dev/vikunja"; mkdir -p "$VD/db" "$VD/files"
printf 'VIKUNJA_SERVICE_SECRET=%s\n' "$(openssl rand -hex 32)" > "$VD/env"
cat >> "$VD/env" <<EOF
VIKUNJA_SERVICE_PUBLICURL=http://127.0.0.1:3456/
VIKUNJA_DATABASE_TYPE=sqlite
VIKUNJA_DATABASE_PATH=/db/vikunja.db
VIKUNJA_WEBHOOKS_ENABLED=false
VIKUNJA_SERVICE_ENABLEREGISTRATION=false
EOF
docker run -d --name mosaic-vikunja --restart unless-stopped --user "$(id -u):$(id -g)" \
  -p 127.0.0.1:3456:3456 -v "$VD/db:/db" -v "$VD/files:/app/vikunja/files" \
  --env-file "$VD/env" \
  vikunja/vikunja@sha256:e2204a1c1c6a81e833c2b3a5442be182ca2335b54c2e7e37578cc3fe12a27cfc
docker exec -it mosaic-vikunja /app/vikunja/vikunja user create -u jason -e you@example.invalid
VK=http://127.0.0.1:3456
```

`user create` asks for the password when you leave out `-p`. If your
build doesn't prompt, stop and set it some other way. Don't put the
password on the command line.

### Owner login for this guide

This writes the owner's session header to a file. The password comes
from a prompt, and the token never reaches the terminal.

```sh
python3 - "$VK" jason "$S/vikunja-owner.hdr" <<'PY'
import getpass, json, sys, urllib.request
base, user, out = sys.argv[1:4]
pw = getpass.getpass("Vikunja owner password: ")
req = urllib.request.Request(base + "/api/v2/login",
    data=json.dumps({"username": user, "password": pw}).encode(),
    headers={"Content-Type": "application/json"})
body = json.load(urllib.request.urlopen(req))
if "token" not in body:
    sys.exit("login answered without a token field; stop and report the keys: %s" % sorted(body))
open(out, "w").write("Authorization: Bearer " + body["token"] + "\n")
print("owner header written")
PY
```

The probes logged in at `/api/v2/login`. The `token` field name is
assumed from v1, so the script stops if it's missing. Section 4 deletes
the header file.

## 3. Vikunja: the project, the board and the bots

### The project and its board

In the web UI, as the owner:
1. Create the project `mosaic-stack`, and note its id (in the URL).
2. Open its Kanban view and rename the buckets: To-Do becomes `todo`,
   Doing becomes `in-progress`, Done becomes `done`. Add `in-review` and
   `blocked`. Each title appears once.
3. In the view's settings, check that the done bucket is `done` and the
   default bucket is `todo`. Leave bucket configuration on manual.
4. Create the labels the business file template lists, and note each id.
   The business file names labels by id until row S3 settles which
   labels a bot can see.

```sh
P=<project id>
```

### The five bots

```sh
api() { curl -sf -H @"$S/vikunja-owner.hdr" -H 'Content-Type: application/json' "$@"; }
for r in pm cto coder reviewer sync; do
  api -X POST "$VK/api/v2/user/bots" \
    -d "{\"username\":\"bot-$BIZ-$r\",\"name\":\"$BIZ $r\"}" | jq -c '{id, username}'
done
```

Note the five ids. Bot usernames must start with `bot-`, and this guide
uses `bot-<business>-<role>` so two businesses on one instance don't
collide.

### Shares

The role bots get write (1). The sync bot gets read (0), so a bug in
the poll path can't write.

```sh
for r in pm cto coder reviewer; do
  api -X POST "$VK/api/v2/projects/$P/users" -d "{\"username\":\"bot-$BIZ-$r\",\"permission\":1}" | jq -c '{username, permission}'
done
api -X POST "$VK/api/v2/projects/$P/users" -d "{\"username\":\"bot-$BIZ-sync\",\"permission\":0}" | jq -c '{username, permission}'
```

### Scopes

From addendum B section 2 (lead decision 52). Every group or verb not
listed stays off.

```sh
cat > "$S/scopes-sync.json" <<'EOF'
{"projects":["read_one","views_buckets","views_buckets_tasks_get"],"projects_views":["read_all"],"tasks":["read_all","read_one"],"tasks_comments":["read_all"]}
EOF
cat > "$S/scopes-pm.json" <<'EOF'
{"tasks":["read_one","create","update"],"tasks_assignees":["create","delete"],"tasks_relations":["create","delete"],"tasks_labels":["create","delete"],"tasks_comments":["create"],"labels":["read_all"],"projects":["views_buckets_tasks"]}
EOF
cat > "$S/scopes-worker.json" <<'EOF'
{"tasks":["read_one","update"],"tasks_comments":["create"],"projects":["views_buckets_tasks"]}
EOF
```

cto, coder and reviewer all use `scopes-worker.json`.

### Tokens

`mint` sends the request, writes the token straight to its file, and
prints only the metadata. Vikunja shows a token once.

```sh
mint() {  # mint ROLE BOT_ID SCOPES_FILE
  local r=$1 id=$2 sc=$3 resp="$S/.mint-$1.json"
  jq -n --arg t "$BIZ-$r-$(date +%F)" --argjson o "$id" --arg e "$EXP" --slurpfile p "$sc" \
     '{title:$t, owner_id:$o, expires_at:$e, permissions:$p[0]}' |
    api -X POST "$VK/api/v2/tokens" --data-binary @- -o "$resp" &&
  jq -j .token "$resp" > "$S/$r-vikunja.token" &&
  jq -c '{id, owner_id, expires_at, starts_tk: (.token | startswith("tk_"))}' "$resp"
  rm -f "$resp"
}
mint pm       <pm id>       "$S/scopes-pm.json"
mint cto      <cto id>      "$S/scopes-worker.json"
mint coder    <coder id>    "$S/scopes-worker.json"
mint reviewer <reviewer id> "$S/scopes-worker.json"
mint sync     <sync id>     "$S/scopes-sync.json"
```

Check that each line shows `starts_tk: true` and the `expires_at` you
set. Vikunja accepts a past expiry without complaint, so read it. A 400
with code 14002 means a scope name is wrong. Fix the scope file and mint
again.

## 4. Check and clean up

```sh
rm -f "$S/vikunja-owner.hdr"
stat -c '%a %s %n' "$S"/*.token
```

Each of the nine token files must show `600` and a nonzero size. Once row
S3 lands, `mosaic` runs the broker's startup probe for every identity. It
makes one control call and one call that must be refused, on a task id
that doesn't exist, and it refuses to start on any surprise. That probe,
passing for all nine, closes row SR's gate.

The business file (`~/.config/mosaic-dev/businesses/mosaic-stack.json`,
row S1) references each file by absolute path, and never holds a value.
One role's entry looks like this. Row S1's validator has the final
shape.

```json
"coder": { "definition": "coder",
           "tracker": { "bot": "bot-mosaic-stack-coder", "botId": 0 },
           "credentials": {
             "gitea":   { "file": "/home/you/.config/mosaic-dev/secrets/mosaic-stack/coder-gitea.token",   "rotateBy": "YYYY-MM-DD" },
             "vikunja": { "file": "/home/you/.config/mosaic-dev/secrets/mosaic-stack/coder-vikunja.token", "expires":  "YYYY-MM-DD" } } }
```

The sync bot has its own entry under the tracker settings, not under a
role. The stack never writes this file.

## 5. Rotation

- **Vikunja**, before `expires`: log in as the owner (section 2), mint a
  new token for the same bot with `mint`, update `expires` in the
  business file, and restart the broker. Then revoke the old token:
  `api -X DELETE "$VK/api/v2/tokens/<old id>"`. The broker refuses to
  start with a token past its `expires`, and it treats any 401 as a
  refusal, never a retry.
- **Gitea**, every 90 days or at once if a token may have leaked: log in
  as the bot, generate the replacement, write it to the file, restart
  the broker, then delete the old token in the same settings page.
  Update `rotateBy`. Each rotation gets one line in
  `docs/SESSIONS.md`: date, who, which identities, and no values.
- **Revoking a role at once:** delete its token, the Gitea one in the
  bot's settings and the Vikunja one with the `DELETE` above, or remove
  the bot's collaborator access or project share. The broker's next
  call gets a 401 or 403 and refuses.