remove gitea workflows

* golly-showy:
  update golly notifier to use Block Kit blocks

.github/workflows/golly-hellmouth-cup.yml

@@ -1,31 +0,0 @@
-name: Hellmouth Cup Notifier
-
-on:
-  schedule:
-    # Every hour at minute 1, Friday through Sunday UTC
-    # 8 AM Pacific = 15:00 UTC (PDT) or 16:00 UTC (PST)
-    # Run every hour Fri-Sun UTC to cover both; script checks Pacific time
-    - cron: '1 * * * 5,6,0'
-  workflow_dispatch:
-
-jobs:
-  notify:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.11'
-
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -r golly-notifier/requirements.txt
-
-      - name: Run Hellmouth Cup notifier
-        env:
-          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
-          SLACK_CHANNEL_ID: ${{ secrets.GOLLY_NOTIFIER_CHANNEL_ID }}
-        run: python golly-notifier/notifier.py hellmouth

.github/workflows/golly-star-cup.yml

@@ -1,31 +0,0 @@
-name: Star Cup Notifier
-
-on:
-  schedule:
-    # Every hour at minute 1, Tuesday and Wednesday UTC
-    # 5 AM Pacific = 12:00 UTC (PDT) or 13:00 UTC (PST)
-    # Run every hour Tue-Wed UTC to cover both; script checks Pacific time
-    - cron: '20 * * * 2,3'
-  workflow_dispatch:
-
-jobs:
-  notify:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.11'
-
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -r golly-notifier/requirements.txt
-
-      - name: Run Star Cup notifier
-        env:
-          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
-          SLACK_CHANNEL_ID: ${{ secrets.GOLLY_NOTIFIER_CHANNEL_ID }}
-        run: python golly-notifier/notifier.py star

.gitignore

@@ -1,3 +1,5 @@
+.claude
 .DS_Store
 __pycache__
-.worktrees/
+.worktrees
+utilities/.environment

Readme.md

@@ -19,5 +19,6 @@ See [SETUP.md](SETUP.md) for Slack app creation, GitHub secrets, and how to add
 ## Slack TV Channel Directory
 
 - `waste-land/` - **The Waste Land, One Line Per Hour** — Eliot's poem is 434 lines. At one line per hour, it takes ~18 days to complete, then loops. The line-per-hour pace is critical: each line sits alone in the channel long enough to be read as a standalone fragment, which is how the poem actually works — collage, juxtaposition, voices interrupting each other. The footnotes post as threaded replies.
-- `dactylic-odyssey` - **The Odyssey in Dactylic Drip** — Post 5 lines of the Fagles (or Lattimore, or Fitzgerald) translation every 4 hours. The Odyssey is ~12,110 lines. At 30 lines/day, the full poem takes ~403 days — just over a year. A 5-line chunk is roughly one complete Homeric image or action beat. The year-long duration mirrors the scale of the journey itself. When it finishes, start the Iliad.
+- `dactylic-odyssey/` - **The Odyssey in Dactylic Drip** — Post 5 lines of the Fagles (or Lattimore, or Fitzgerald) translation every 4 hours. The Odyssey is ~12,110 lines. At 30 lines/day, the full poem takes ~403 days — just over a year. A 5-line chunk is roughly one complete Homeric image or action beat. The year-long duration mirrors the scale of the journey itself. When it finishes, start the Iliad.
+- `golly-notifier/` - **Golly Postseason Notifications** — Tracks the [Golly](https://golly.life) postseason and posts game results, series updates, and schedule notifications. Two bot personas: **Star Cup** (Tuesday–Wednesday) and **Hellmouth Cup** (Friday–Sunday). Each checks the Golly API hourly during its window, reporting series starts, daily scores with replay links, series clinches, and cup winners. Scheduling: Star runs 5 AM–1 AM PT Tue, 5 AM–5 PM PT Wed; Hellmouth runs 8 AM–4 PM PT Fri, 8 AM–8 PM PT Sat–Sun.
 

golly-notifier/golly_prompt.txt

@@ -1,37 +0,0 @@
-I want to create a notifier kind of like @waste-land but with more customized
-logic. instead of sending notifications that are lines of a poem sent one
-per hour, we are going to check an API during a specific time slot.
-
-we are going to have a star cup notifier and a hellmouth cup notifier. Star
-cup notifier runs Tuesday and Wednesday, hellmouth cup notifier runs Friday,
-Saturday, Sunday. Star Cup notifier will start at 5 AM Pacific, Hellmouth Cup
-notifier will start at 8 AM Pacific.
-
-Both notifiers will hit an API /mode endpoint that will indicate the state of
-the game simulator. the mode shifts from 21 (waiting for round 1 series of
-postseason to begin), to 31 (round 1 series of postseason ongoing), to 22
-(waiting for round 2 series of postseason to begin), to 32 (round 2 series of
-postseason ongoing), to 23 (waiting for final cup series of postseason to
-begin), to 33 (final cup series of postseason is ongoing), to 40 (postseason
-is over).
-
-The procedure for the notifications will work as follows.
-
-at the top of each hour (minute 1) during each specified window:
-- check the mode 
-- if the mode is 31, 32, or 33, the series is ongoing.
-    - if the game description has "Game 1" in the title, it is the notification of the series. send a notification
-      that says "The XYZ Series is starting now!"
-    - if the game description has any other non-1 game number in the title, the series is ongoing. send a
-      notification that has yesterday's game outcome/scores.
-    - for each day, if the series is ongoing, and a matchup occurred yesterday but not today, determine who won
-      the series, and the notification should announce who won the series.
-- if the mode is 21, the postseason has not started yet, and there is nothing to do.
-- if the mode is 22, and it is Friday, check if less than one hour has elapsed, if so, announce the outcome of
-  round 1 of the postseason
-- if the mode is 22, and it is Saturday, there is nothing to do.
-- if the mode is 23, and it is Saturday, check if less than one hour has elapsed, if so, announce the outcome of
-  round 2 of the postseason
-- if the mode is 23, and it is Sunday, there is nothing to do.
-- if the mode is 40, and less than one hour has elapsed, announce the outcome of the final cup series.
-

golly-notifier/notifier.py

@@ -1,267 +0,0 @@
-import os
-import sys
-import re
-import requests
-from datetime import datetime
-import pytz
-
-SLACK_API_URL = "https://slack.com/api/chat.postMessage"
-
-CUPS = {
-    "star": {
-        "api_base": "https://cloud.star.vii.golly.life",
-        "site_base": "https://star.vii.golly.life",
-        "cup_name": "Star Cup",
-        "cup_series_key": "SCS",
-        "bot_username": "Star Cup",
-        "bot_icon_url": "https://git.charlesreid1.com/charlesreid1/slack-tv/raw/branch/main/golly-notifier/icon-star.png",
-        "days": [1, 2],  # Tuesday, Wednesday (weekday() values)
-        "start_hour": 5,
-    },
-    "hellmouth": {
-        "api_base": "https://cloud.vii.golly.life",
-        "site_base": "https://vii.golly.life",
-        "cup_name": "Hellmouth Cup",
-        "cup_series_key": "HCS",
-        "bot_username": "Hellmouth Cup",
-        "bot_icon_url": "https://git.charlesreid1.com/charlesreid1/slack-tv/raw/branch/main/golly-notifier/icon-hellmouth.png",
-        "days": [4, 5, 6],  # Friday, Saturday, Sunday
-        "start_hour": 8,
-    },
-}
-
-SERIES_NAMES = {
-    "LDS": "Division Series",
-    "LCS": "League Championship Series",
-    "HCS": "Hellmouth VII Cup",
-    "SCS": "Star Cup Series",
-}
-
-MODE_TO_SERIES = {
-    31: "LDS",
-    32: "LCS",
-    33: None,  # filled per-cup: HCS or SCS
-}
-
-
-def fetch_json(url):
-    resp = requests.get(url, timeout=10)
-    resp.raise_for_status()
-    return resp.json()
-
-
-def send_slack_message(token, channel, text, username, icon_url):
-    payload = {
-        "channel": channel,
-        "text": text,
-        "username": username,
-        "icon_url": icon_url,
-    }
-    response = requests.post(
-        SLACK_API_URL,
-        headers={"Authorization": f"Bearer {token}"},
-        json=payload,
-        timeout=10,
-    )
-    response.raise_for_status()
-    data = response.json()
-    if not data.get("ok"):
-        raise RuntimeError(f"Slack API error: {data.get('error')}")
-    return data
-
-
-
-def format_matchup(g):
-    """Two-line hockey-bot style: bold name line, then abbr/score line."""
-    name_line = f"*{g['team1Name']} vs. {g['team2Name']}*"
-    score_line = f"{g['team1Abbr']}: {g['team1Score']} | {g['team2Abbr']}: {g['team2Score']} | Final"
-    return [name_line, score_line]
-
-
-def game_link(site_base, game):
-    game_id = game.get("id", "")
-    desc = game.get("description", "")
-    match = re.match(r"Game (\d+)", desc)
-    label = f"Game {match.group(1)}" if match else "Watch"
-    url = f"{site_base}/simulator/index.html?gameId={game_id}"
-    return f"<{url}|{label}>"
-
-
-def format_current_games(current_games, site_base=None):
-    lines = []
-    for g in sorted(current_games, key=lambda x: x.get("description", "")):
-        w1, l1 = g["team1SeriesWinLoss"]
-        w2, l2 = g["team2SeriesWinLoss"]
-        t1 = f"{g['team1Name']} ({w1}-{l1})" if w1 or l1 else g["team1Name"]
-        t2 = f"{g['team2Name']} ({w2}-{l2})" if w2 or l2 else g["team2Name"]
-        if site_base:
-            link = game_link(site_base, g)
-            lines.append(f"{t1} vs. {t2}: {link}")
-        else:
-            lines.append(f"*{t1} vs. {t2}*")
-    return lines
-
-
-def build_notification(cup_config, mode_data, postseason, current_games=None):
-    mode = mode_data["mode"]
-    elapsed = mode_data.get("elapsed", 0)
-    cup_name = cup_config["cup_name"]
-    cup_series_key = cup_config["cup_series_key"]
-    site_base = cup_config.get("site_base", "")
-    just_entered = elapsed < 3600
-
-    if mode == 21:
-        return []
-
-    if mode in (31, 32, 33):
-        if not just_entered:
-            return []
-
-        if mode == 33:
-            series_key = cup_series_key
-        else:
-            series_key = MODE_TO_SERIES[mode]
-
-        series_name = SERIES_NAMES.get(series_key, series_key)
-        series_day = (elapsed // 3600) + 1
-        series_data = postseason.get(series_key, [])
-
-        if just_entered and series_day == 1:
-            site_link = f"<{site_base}|{site_base.replace('https://', '')}>" if site_base else ""
-            lines = [f"{cup_name}: {series_name} is starting now! {site_link}".strip()]
-            if current_games:
-                lines.extend(format_current_games(current_games))
-            return ["\n".join(lines)]
-
-        messages = []
-
-        if just_entered and series_data:
-            yesterday_games = series_data[-1]
-            outcome_lines = [f"*{series_name} Results*"]
-            for g in yesterday_games:
-                outcome_lines.extend(format_matchup(g))
-                w1, l1 = g["team1SeriesWinLoss"]
-                w2, l2 = g["team2SeriesWinLoss"]
-                outcome_lines.append(f"Series: {g['team1Name']} {w1}-{l1}, {g['team2Name']} {w2}-{l2}")
-
-            today_pairs = set()
-            if current_games:
-                for g in current_games:
-                    pair = tuple(sorted([g["team1Name"], g["team2Name"]]))
-                    today_pairs.add(pair)
-
-            for g in yesterday_games:
-                pair = tuple(sorted([g["team1Name"], g["team2Name"]]))
-                if pair not in today_pairs:
-                    w1, _ = g["team1SeriesWinLoss"]
-                    w2, _ = g["team2SeriesWinLoss"]
-                    if w1 > w2:
-                        winner, loser, wl = g["team1Name"], g["team2Name"], f"{w1}-{w2}"
-                    else:
-                        winner, loser, wl = g["team2Name"], g["team1Name"], f"{w2}-{w1}"
-                    outcome_lines.append(f"{winner} wins the series over {loser} ({wl})")
-
-            messages.append("\n".join(outcome_lines))
-
-        if current_games:
-            upcoming_lines = [f"*{series_name} — Today's Games*"]
-            upcoming_lines.extend(format_current_games(current_games))
-            messages.append("\n".join(upcoming_lines))
-
-        return messages
-
-    if mode == 22:
-        if not just_entered:
-            return []
-        result = announce_series_outcome(postseason, "LDS", "Division Series")
-        return [result] if result else []
-
-    if mode == 23:
-        if not just_entered:
-            return []
-        result = announce_series_outcome(postseason, "LCS", "League Championship Series")
-        return [result] if result else []
-
-    if mode == 40:
-        if not just_entered:
-            return []
-        result = announce_series_outcome(postseason, cup_series_key, cup_name)
-        return [result] if result else []
-
-    return []
-
-
-def announce_series_outcome(postseason, series_key, series_name):
-    series_data = postseason.get(series_key, [])
-    if not series_data:
-        return None
-
-    last_day = series_data[-1]
-    lines = [f"*{series_name} Results*"]
-    for game in last_day:
-        w1, _ = game["team1SeriesWinLoss"]
-        w2, _ = game["team2SeriesWinLoss"]
-        if w1 > w2:
-            winner = game["team1Name"]
-            loser = game["team2Name"]
-            series_wl = f"{w1}-{w2}"
-        else:
-            winner = game["team2Name"]
-            loser = game["team1Name"]
-            series_wl = f"{w2}-{w1}"
-        lines.append(f"{winner} defeats {loser} ({series_wl})")
-    return "\n".join(lines)
-
-
-def run(cup_key):
-    token = os.getenv("SLACK_BOT_TOKEN")
-    channel = os.getenv("SLACK_CHANNEL_ID")
-
-    if not token or not channel:
-        print("SLACK_BOT_TOKEN and SLACK_CHANNEL_ID must be set. Skipping.")
-        return
-
-    if cup_key not in CUPS:
-        print(f"Unknown cup: {cup_key}. Must be 'star' or 'hellmouth'.")
-        return
-
-    cup = CUPS[cup_key]
-    pacific_tz = pytz.timezone("America/Los_Angeles")
-    now_pt = datetime.now(pacific_tz)
-    print(f"[{now_pt.strftime('%Y-%m-%d %H:%M PT')}] Running {cup['cup_name']} notifier")
-
-    weekday = now_pt.weekday()
-    if weekday not in cup["days"]:
-        print(f"  Not a {cup['cup_name']} day (weekday={weekday}). Skipping.")
-        return
-
-    if now_pt.hour < cup["start_hour"]:
-        print(f"  Too early (hour={now_pt.hour}, start={cup['start_hour']}). Skipping.")
-        return
-
-    api_base = cup["api_base"]
-    mode_data = fetch_json(f"{api_base}/mode")
-    print(f"  Mode: {mode_data}")
-
-    postseason = fetch_json(f"{api_base}/postseason")
-    print(f"  Postseason series keys: {list(postseason.keys())}")
-
-    current_games = fetch_json(f"{api_base}/currentGames")
-    print(f"  Current games: {len(current_games)}")
-
-    messages = build_notification(cup, mode_data, postseason, current_games)
-
-    if messages:
-        for i, msg in enumerate(messages, 1):
-            print(f"  Sending message {i}/{len(messages)}: {msg[:80]}")
-            send_slack_message(token, channel, msg, cup["bot_username"], cup["bot_icon_url"])
-            print(f"  Sent message {i}.")
-    else:
-        print("  No notification to send.")
-
-
-if __name__ == "__main__":
-    if len(sys.argv) < 2:
-        print("Usage: python notifier.py <star|hellmouth>")
-        sys.exit(1)
-    run(sys.argv[1])

utilities/.environment.example

@@ -0,0 +1,4 @@
+# Copy this file to .environment and fill in real values.
+# Then: source .environment
+
+SLACK_BOT_TOKEN=xoxb-your-token-here

utilities/README.md

@@ -0,0 +1,147 @@
+# Utilities — Message Cleanup
+
+Scripts for deleting messages posted by the Slack TV bot. Useful when testing a new channel, resetting after a bad deploy, or cleaning up a channel before archiving it.
+
+Both scripts default to **dry-run mode** — they show what would happen without touching anything. Pass `--real` to actually delete.
+
+---
+
+## Before you start: expand the app's permissions
+
+The channel notifiers only need `chat:write` and `chat:write.customize`. These utilities need two additional scopes so they can read channel history and identify bot messages.
+
+### 1. Add the new scopes
+
+1. Go to [api.slack.com/apps](https://api.slack.com/apps) and select the **Slack TV** app
+2. In the left sidebar, click **OAuth & Permissions**
+3. Scroll to **Bot Token Scopes** and add:
+
+| Scope | Why |
+|-------|-----|
+| `channels:history` | Read message history in public channels (`conversations.history`) |
+| `groups:history` | Read message history in private channels (only needed if any Slack TV channel is private) |
+
+The app should now have four (or five) scopes total:
+
+| Scope | Used by |
+|-------|---------|
+| `chat:write` | notifiers (post messages) + utilities (delete messages) |
+| `chat:write.customize` | notifiers (override bot name and icon per message) |
+| `channels:history` | utilities (list messages in public channels) |
+| `groups:history` | utilities (list messages in private channels) — optional |
+
+### 2. Reinstall the app
+
+After adding scopes, Slack requires you to reinstall:
+
+1. Scroll to the top of the **OAuth & Permissions** page
+2. Click **Reinstall to Workspace** → **Allow**
+3. The **Bot User OAuth Token** (`xoxb-...`) stays the same — no secrets or config to update
+
+That's it. The existing notifiers are unaffected; the new scopes are additive.
+
+---
+
+## Files
+
+```
+utilities/
+├── delete_message.py       # Delete a single message by URL
+├── clear_channel.py        # Delete all bot messages in a channel
+├── requirements.txt        # Python dependencies
+├── .environment.example    # Template — copy to .environment and fill in
+├── .environment            # Your real tokens (git-ignored)
+└── README.md
+```
+
+---
+
+## Environment variables
+
+These scripts are meant to be run locally on a developer's machine, not in CI. You need to set one variable:
+
+| Variable | Value | Where to find it |
+|----------|-------|-------------------|
+| `SLACK_BOT_TOKEN` | `xoxb-...` | [api.slack.com/apps](https://api.slack.com/apps) → Slack TV → **OAuth & Permissions** → **Bot User OAuth Token** |
+
+A `.environment.example` template is checked in. Copy it, fill in your token, and source it:
+
+```bash
+cp .environment.example .environment
+# edit .environment — paste your real xoxb-... token
+```
+
+The real `.environment` file is git-ignored so tokens never get committed.
+
+---
+
+## Setup
+
+```bash
+cd utilities
+python -m venv .venv
+source .venv/bin/activate
+pip install -r requirements.txt
+source .environment
+```
+
+---
+
+## delete_message.py
+
+Delete a single message by its Slack URL. Get the URL by right-clicking a message in Slack → **Copy link**.
+
+```bash
+# Dry run (default) — shows what would be deleted
+python delete_message.py "https://myworkspace.slack.com/archives/C012AB3CD/p1234567890123456"
+
+# Actually delete
+python delete_message.py "https://myworkspace.slack.com/archives/C012AB3CD/p1234567890123456" --real
+```
+
+The script parses the channel ID and message timestamp from the URL automatically. It can only delete messages posted by the bot (Slack enforces this — bots cannot delete other users' messages).
+
+---
+
+## clear_channel.py
+
+Delete **all** messages posted by the bot in a given channel. Takes a channel ID, not a channel name.
+
+```bash
+# Dry run (default) — lists every bot message that would be deleted
+python clear_channel.py C012AB3CD
+
+# Actually delete (prompts for confirmation)
+python clear_channel.py C012AB3CD --real
+
+# Actually delete (skip confirmation prompt)
+python clear_channel.py C012AB3CD --real --force
+```
+
+### How it works
+
+1. Calls `auth.test` to learn the bot's own user ID
+2. Pages through `conversations.history` to find all messages in the channel
+3. Filters to messages where `user` matches the bot's user ID
+4. In dry-run mode, prints the list and stops
+5. In real mode, deletes each message via `chat.delete` with a 1.2-second delay between calls to stay within Slack's rate limits (~50 requests/minute for Tier 3 methods)
+
+### Safety rails
+
+- **Dry run by default** — you have to explicitly opt in with `--real`
+- **Confirmation prompt** — in `--real` mode, prints a loud warning and requires typing `y` before proceeding
+- **`--force` flag** — skips the confirmation prompt for scripted use, but still requires `--real`
+- **Bot messages only** — the script identifies and deletes only messages posted by the bot token you're using; other users' messages are untouched
+
+---
+
+## Finding the channel ID
+
+Slack's API uses channel IDs, not names. To find a channel's ID:
+
+- Open Slack in a browser, navigate to the channel, and grab the ID from the URL:
+  ```
+  https://app.slack.com/client/T.../C012AB3CD
+                                     ^^^^^^^^^^^ channel ID
+  ```
+- Or: right-click the channel name → **View channel details** → scroll to the bottom of the **About** tab

utilities/clear_channel.py

@@ -0,0 +1,206 @@
+#!/usr/bin/env python3
+"""Delete ALL messages posted by this bot in a Slack channel.
+
+Usage:
+    python clear_channel.py <channel_id>                # dry run (default)
+    python clear_channel.py <channel_id> --dry-run      # explicit dry run
+    python clear_channel.py <channel_id> --real          # actually delete (prompts for confirmation)
+    python clear_channel.py <channel_id> --real --force  # actually delete (skip confirmation)
+
+Environment:
+    SLACK_BOT_TOKEN  — Bot User OAuth Token (xoxb-...)
+
+Required Slack scopes:
+    channels:history  — read message history in public channels
+    groups:history    — read message history in private channels (if needed)
+    chat:write        — delete messages posted by this bot
+"""
+
+import os
+import sys
+import time
+import requests
+
+
+SLACK_HISTORY_URL = "https://slack.com/api/conversations.history"
+SLACK_DELETE_URL = "https://slack.com/api/chat.delete"
+SLACK_AUTH_TEST_URL = "https://slack.com/api/auth.test"
+
+
+def get_bot_user_id(token):
+    """Get the bot's own user ID via auth.test."""
+    response = requests.post(
+        SLACK_AUTH_TEST_URL,
+        headers={"Authorization": f"Bearer {token}"},
+        timeout=10,
+    )
+    response.raise_for_status()
+    data = response.json()
+    if not data.get("ok"):
+        raise RuntimeError(f"Slack API error: {data.get('error')}")
+    return data["user_id"]
+
+
+def fetch_bot_messages(token, channel, bot_user_id):
+    """Fetch all messages in a channel posted by the bot.
+
+    Pages through conversations.history (newest-first, 200 per page) and
+    collects messages where the user field matches the bot's user ID.
+    """
+    messages = []
+    cursor = None
+
+    while True:
+        params = {"channel": channel, "limit": 200}
+        if cursor:
+            params["cursor"] = cursor
+
+        response = requests.get(
+            SLACK_HISTORY_URL,
+            headers={"Authorization": f"Bearer {token}"},
+            params=params,
+            timeout=15,
+        )
+        response.raise_for_status()
+        data = response.json()
+
+        if not data.get("ok"):
+            raise RuntimeError(f"Slack API error: {data.get('error')}")
+
+        for msg in data.get("messages", []):
+            if msg.get("user") == bot_user_id:
+                messages.append(msg)
+
+        # Pagination
+        metadata = data.get("response_metadata", {})
+        cursor = metadata.get("next_cursor")
+        if not cursor:
+            break
+
+    return messages
+
+
+def delete_message(token, channel, ts):
+    """Call chat.delete to remove a message. Returns True on success."""
+    response = requests.post(
+        SLACK_DELETE_URL,
+        headers={"Authorization": f"Bearer {token}"},
+        json={"channel": channel, "ts": ts},
+        timeout=10,
+    )
+    response.raise_for_status()
+    data = response.json()
+    if not data.get("ok"):
+        error = data.get("error")
+        if error == "message_not_found":
+            # Already deleted or ephemeral — not a failure
+            return False
+        raise RuntimeError(f"Slack API error: {error}")
+    return True
+
+
+def confirm_destructive_action(channel, count):
+    """Print a loud warning and require 'y' + Enter to proceed."""
+    print()
+    print("=" * 60)
+    print("  WARNING: DESTRUCTIVE ACTION")
+    print("=" * 60)
+    print()
+    print(f"  You are about to permanently delete {count} message(s)")
+    print(f"  from channel {channel}.")
+    print()
+    print("  This CANNOT be undone.")
+    print()
+    print("=" * 60)
+    print()
+    answer = input("  Type 'y' and press Enter to continue: ")
+    return answer.strip().lower() == "y"
+
+
+def main():
+    if len(sys.argv) < 2 or sys.argv[1] in ("-h", "--help"):
+        print(__doc__.strip())
+        sys.exit(0)
+
+    channel = sys.argv[1]
+    flags = sys.argv[2:]
+
+    real_mode = "--real" in flags
+    force = "--force" in flags
+
+    if "--dry-run" in flags and "--real" in flags:
+        print("Error: --dry-run and --real are mutually exclusive.")
+        sys.exit(1)
+
+    if force and not real_mode:
+        print("Error: --force only makes sense with --real.")
+        sys.exit(1)
+
+    token = os.getenv("SLACK_BOT_TOKEN")
+    if not token:
+        print("Error: SLACK_BOT_TOKEN environment variable is not set.")
+        sys.exit(1)
+
+    # Identify who we are
+    print("Identifying bot user...")
+    bot_user_id = get_bot_user_id(token)
+    print(f"Bot user ID: {bot_user_id}")
+    print()
+
+    # Fetch messages
+    print(f"Fetching messages from channel {channel}...")
+    bot_messages = fetch_bot_messages(token, channel, bot_user_id)
+    print(f"Found {len(bot_messages)} message(s) from this bot.")
+
+    if not bot_messages:
+        print("Nothing to delete.")
+        return
+
+    # Show preview
+    print()
+    print("Messages to delete:")
+    print("-" * 60)
+    for msg in bot_messages:
+        ts = msg["ts"]
+        text = msg.get("text", "")
+        preview = text[:70].replace("\n", " ")
+        if len(text) > 70:
+            preview += "..."
+        print(f"  [{ts}] {preview}")
+    print("-" * 60)
+    print()
+
+    if not real_mode:
+        print(f"[DRY RUN] Would delete {len(bot_messages)} message(s) from channel {channel}.")
+        print("Pass --real to actually delete.")
+        return
+
+    # Confirmation gate
+    if not force:
+        if not confirm_destructive_action(channel, len(bot_messages)):
+            print("Aborted.")
+            sys.exit(0)
+
+    # Delete
+    deleted = 0
+    skipped = 0
+    for i, msg in enumerate(bot_messages, 1):
+        ts = msg["ts"]
+        text_preview = msg.get("text", "")[:50].replace("\n", " ")
+        sys.stdout.write(f"\r  Deleting {i}/{len(bot_messages)}: [{ts}] {text_preview}")
+        sys.stdout.flush()
+        if delete_message(token, channel, ts):
+            deleted += 1
+        else:
+            skipped += 1
+        # Slack rate limit: ~50 requests per minute for chat.delete (Tier 3)
+        # Sleep briefly between deletions to stay well within limits.
+        time.sleep(1.2)
+
+    print()
+    print()
+    print(f"Done. Deleted {deleted}, skipped {skipped} (already gone).")
+
+
+if __name__ == "__main__":
+    main()

utilities/delete_message.py

@@ -0,0 +1,106 @@
+#!/usr/bin/env python3
+"""Delete a single Slack message by its message URL.
+
+Usage:
+    python delete_message.py <message_url>              # dry run (default)
+    python delete_message.py <message_url> --dry-run    # explicit dry run
+    python delete_message.py <message_url> --real       # actually delete
+
+Message URL format (copy from Slack via "Copy link"):
+    https://yourworkspace.slack.com/archives/C012AB3CD/p1234567890123456
+
+Environment:
+    SLACK_BOT_TOKEN  — Bot User OAuth Token (xoxb-...)
+
+Required Slack scopes:
+    chat:write  — delete messages posted by this bot
+"""
+
+import os
+import re
+import sys
+import requests
+
+
+SLACK_DELETE_URL = "https://slack.com/api/chat.delete"
+
+
+def parse_message_url(url):
+    """Extract channel ID and message timestamp from a Slack message URL.
+
+    Slack message URLs look like:
+        https://workspace.slack.com/archives/C012AB3CD/p1234567890123456
+        https://workspace.slack.com/archives/C012AB3CD/p1234567890123456?thread_ts=...
+
+    The 'p' prefix on the timestamp is Slack's URL encoding — the actual ts
+    is the digits with a dot inserted: p1234567890123456 -> 1234567890.123456
+    """
+    pattern = r"archives/([A-Z0-9]+)/p(\d{10})(\d{6})"
+    match = re.search(pattern, url)
+    if not match:
+        return None, None
+    channel_id = match.group(1)
+    ts = f"{match.group(2)}.{match.group(3)}"
+    return channel_id, ts
+
+
+def delete_message(token, channel, ts):
+    """Call chat.delete to remove a message."""
+    response = requests.post(
+        SLACK_DELETE_URL,
+        headers={"Authorization": f"Bearer {token}"},
+        json={"channel": channel, "ts": ts},
+        timeout=10,
+    )
+    response.raise_for_status()
+    data = response.json()
+    if not data.get("ok"):
+        raise RuntimeError(f"Slack API error: {data.get('error')}")
+    return data
+
+
+def main():
+    if len(sys.argv) < 2 or sys.argv[1] in ("-h", "--help"):
+        print(__doc__.strip())
+        sys.exit(0)
+
+    url = sys.argv[1]
+    flags = sys.argv[2:]
+
+    real_mode = "--real" in flags
+    # --dry-run is the default, but accept it explicitly too
+    if "--dry-run" in flags and "--real" in flags:
+        print("Error: --dry-run and --real are mutually exclusive.")
+        sys.exit(1)
+
+    channel_id, ts = parse_message_url(url)
+    if not channel_id or not ts:
+        print(f"Error: Could not parse message URL: {url}")
+        print()
+        print("Expected format:")
+        print("  https://yourworkspace.slack.com/archives/C012AB3CD/p1234567890123456")
+        sys.exit(1)
+
+    token = os.getenv("SLACK_BOT_TOKEN")
+    if not token:
+        print("Error: SLACK_BOT_TOKEN environment variable is not set.")
+        sys.exit(1)
+
+    print(f"Channel: {channel_id}")
+    print(f"Message: {ts}")
+    print()
+
+    if not real_mode:
+        print("[DRY RUN] Would delete message {ts} from channel {channel_id}.".format(
+            ts=ts, channel_id=channel_id,
+        ))
+        print("Pass --real to actually delete.")
+        return
+
+    print(f"Deleting message {ts} from channel {channel_id}...")
+    delete_message(token, channel_id, ts)
+    print("Deleted.")
+
+
+if __name__ == "__main__":
+    main()

utilities/requirements.txt

@@ -1,2 +1 @@
 requests==2.32.3
-pytz==2024.1