README: the Slack module joins the list

Every shipped module had an entry under "Included modules" except Slack,
which wasn't mentioned anywhere in the README — so the one module that can
send as the campus was also the one nobody could read about.

Its entry now sits with the others, in their shape: what it does, the tiles
it offers in the ＋ picker (one transcript per configured channel plus the
two single send surfaces), its four admin groups and its tile settings —
all taken from modules/slack/module.json and client.js.

The testing paragraph listed the ProdCom, ProPresenter and PCO mocks but
not the Slack one, though CLAUDE.md has documented it all along; it is now
there with the SLACK_API_BASE line it needs.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

README.md

@@ -265,6 +265,29 @@ below. Nothing is installed without someone clicking.
   (gear menu): the top-bar text (placeholders such as
   `{series} • {part} | {serviceType} • {date}`), colors, text size, and a
   show/hide checklist for every detail.
+- **Slack** — live transcripts of this location's Slack channels, plus
+  PIN-protected sending as the location. The ＋ picker lists one transcript
+  tile per configured channel, titled `#channel`, and two send surfaces (one
+  of each per dashboard): **Send message**, a free-text box with the admin's
+  quick emojis one press away, and **Quick replies**, a grid of preset
+  buttons. Both post to the channel of whichever transcript was clicked last
+  — its bottom edge lights up in the accent color — and to the first
+  configured channel until one is clicked. Messages arrive with avatars,
+  names and times, Slack's inline formatting and the workspace's custom
+  emoji; a right-click on one opens the reaction menu, and text size and
+  jump-to-latest sit in the title bar. Nothing leaves the machine until the
+  PIN is entered: one PIN unlocks every Slack tile on that dashboard page
+  until the auto-lock idles out, a reload asks again, and the lock button on
+  a send tile's title bar ends it early.
+  Admin config is in four groups: **Slack account** (the location account's
+  User OAuth Token — `xoxp-…`, so messages are literally from the campus —
+  or a bot token plus "Send as"), **Channels** (the joined channels to
+  follow, one transcript tile each), **Transcript** (refresh interval,
+  messages kept, thread replies) and **Sending** (the switch on the group's
+  title row, a 4–8 digit PIN, auto-lock minutes, quick replies one per line
+  as `Label | Message` — add `| #channel` to bind one to a channel — and up
+  to eight quick emojis).
+  Tile settings: avatars, timestamps, names and channel notices.
 - **Clock** — a big booth clock; also the smallest possible module and the
   reference for module authors.
 
@@ -272,10 +295,12 @@ To develop modules against mocks instead of real gear:
 `node tools/prodcom-mock.js` (ProdCom on `127.0.0.1:24480`),
 `node band-lineup-display/tmp/pp-mock.js 1599` (ProPresenter slides on
 `127.0.0.1:1599`), `node tools/pp-timers-mock.js 1600` (ProPresenter
-timers + timecode on `127.0.0.1:1600`) and `node tools/pco-mock.js`
+timers + timecode on `127.0.0.1:1600`), `node tools/pco-mock.js`
 (Planning Center Services on `127.0.0.1:24700` — run ProdDash with
-`PCO_PLAN_API_BASE=http://127.0.0.1:24700`). See the testing section of the
-[module guide](docs/MODULE-GUIDE.md).
+`PCO_PLAN_API_BASE=http://127.0.0.1:24700`) and
+`node tools/slack-mock.js 24716` (the Slack Web API on `127.0.0.1:24716` —
+run ProdDash with `SLACK_API_BASE=http://127.0.0.1:24716/api`). See the
+testing section of the [module guide](docs/MODULE-GUIDE.md).
 
 ## Install as a desktop web app
 

modules/slack/client.js

@@ -141,17 +141,13 @@ const sendTarget = (() => {
     /**
      * Where a send goes, given the configured channels in admin order: the
      * selection while it is still configured and its transcript is on the
-     * page, else the first configured channel that IS on this page — with one
-     * transcript up, that one — and only if the page shows none, the first
-     * configured channel. A send must never quietly go to a channel the
-     * operator cannot see.
+     * page; otherwise the first configured channel.
      */
     resolve(configured) {
       const list = Array.isArray(configured) ? configured : [];
       if (!list.length) return '';
       if (id && list.includes(id) && this.hasTranscript(id)) return id;
-      const onPage = list.find((c) => this.hasTranscript(c));
-      return onPage || list[0];
+      return list[0];
     },
     on(fn) {
       bus.addEventListener('change', fn);
@@ -1104,7 +1100,7 @@ function createSendTile({ root, moduleApi, mode }) {
     if (stopped || !state) return;
     if (token) {
       if (composeEls) {
-        if (composeEls.line) composeEls.line.textContent = sendingLine();
+        composeEls.line.textContent = sendingLine();
         if (composeEls.input) composeEls.input.placeholder = placeholder();
       }
     } else renderGate();
@@ -1181,21 +1177,14 @@ function createSendTile({ root, moduleApi, mode }) {
   let composeEls = null;
   function buildCompose() {
     compose.textContent = '';
-    // Send message names the channel in the box's own placeholder and locks
-    // from the title bar, so a line above the field would only say both
-    // again. Quick replies has no placeholder — there it is the only place
-    // the target is named, so it stays.
-    let line = null;
-    if (mode !== 'send') {
-      const head = el('div', 'sl-compose-head');
-      line = el('span', 'sl-sending', sendingLine());
-      const lockLink = el('button', 'sl-lock-link', 'Lock');
-      lockLink.type = 'button';
-      lockLink.title = 'Lock now';
-      lockLink.addEventListener('click', () => lock('Locked'));
-      head.append(line, lockLink);
-      compose.appendChild(head);
-    }
+    const head = el('div', 'sl-compose-head');
+    const line = el('span', 'sl-sending', sendingLine());
+    const lockLink = el('button', 'sl-lock-link', 'Lock');
+    lockLink.type = 'button';
+    lockLink.title = 'Lock now';
+    lockLink.addEventListener('click', () => lock('Locked'));
+    head.append(line, lockLink);
+    compose.appendChild(head);
 
     const foot = el('div', 'sl-compose-foot');
     const msg = el('div', 'sl-msg');
@@ -1473,7 +1462,7 @@ function createSendTile({ root, moduleApi, mode }) {
       if (!s.sending?.enabled || !s.sending?.pinSet) return void lock('');
       if (!composeEls) return void showCompose(); // the page was unlocked before this tile appeared
       if (composeEls) {
-        if (composeEls.line) composeEls.line.textContent = sendingLine();
+        composeEls.line.textContent = sendingLine();
         if (composeEls.input) composeEls.input.placeholder = placeholder();
       }
     } else renderGate();

modules/slack/module.json

@@ -1,7 +1,7 @@
 {
   "id": "slack",
   "name": "Slack",
-  "version": "1.2.1",
+  "version": "1.2.0",
   "proddash": ">=1.4.0",
   "description": "Live transcripts of this location's Slack channels, plus PIN-protected sending as the location",
   "client": "client.js",
@@ -21,7 +21,7 @@
       "help": "Create a Slack app in the workspace (api.slack.com/apps → Create New App → From scratch) and, under OAuth & Permissions → User Token Scopes, add channels:history, channels:read, groups:history, groups:read, chat:write, users:read, reactions:write (emoji reactions) and emoji:read (the workspace's custom emoji). Sign in to Slack as this location's account — the one named for the campus — open the app's OAuth & Permissions page and press Install to Workspace (or Reinstall to Workspace), then copy the User OAuth Token (xoxp-…) it shows and paste it here: messages from this machine are then literally from the location. A bot token (xoxb-…) works too; it posts as the app, with \"Send as\" naming the location."
     },
     "Channels": {
-      "help": "Every channel picked here becomes its own transcript tile in the ＋ picker, titled with the channel's name. The Send message and Quick replies tiles post to whichever transcript was clicked last — its bottom edge lights up in the accent colour — and until one is clicked, to the first channel here whose transcript is on that dashboard: with a single transcript up, that one. A send never goes to a channel the dashboard is not showing. Only channels the account has joined are listed; join one in Slack first. Each channel is read on its own schedule, all of them together kept inside Slack's rate limit."
+      "help": "Every channel picked here becomes its own transcript tile in the ＋ picker, titled with the channel's name. The Send message and Quick replies tiles post to whichever transcript was clicked last — its bottom edge lights up in the accent colour — and to the first channel here until one is clicked. Only channels the account has joined are listed; join one in Slack first. Each channel is read on its own schedule, all of them together kept inside Slack's rate limit."
     },
     "Sending": {
       "toggle": "sendEnabled",
@@ -49,7 +49,7 @@
       "default": [],
       "group": "Channels",
       "optionsRoute": "/channels",
-      "help": "One transcript tile per channel; until a transcript is clicked, sends go to the first channel here that the dashboard is actually showing. Only channels the account has joined are listed — join one in Slack first."
+      "help": "One transcript tile per channel; the first one is where sends go until a transcript is clicked. Only channels the account has joined are listed — join one in Slack first."
     },
     "pollSeconds": {
       "type": "number",