Address channels in Bot API form and add a founder-run send script

The provisioner records the MTProto channel id; the Bot API needs -100<id>.
adapter-config now converts it, so the test channel resolves to
-1004427430639. scripts/send-post.sh starts a short-lived adapter with the
bot token injected from OpenBao (never printed) and sends one reviewed post.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 5457@bnt-lap001
Assistant-Session: 792bf84a-3783-4f5d-a811-cded61dd2012

scripts/send-post.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+# Send one prepared post (pr-hall-of-helix/posts/<file>.yaml) through a
+# short-lived local adapter, then stop it.
+#
+# Run it yourself, logged in to OpenBao (BAO_ADDR/BAO_TOKEN set). The bot token
+# goes from OpenBao straight into the adapter's environment and is never
+# printed. The adapter's store is in memory, so idempotency on post_id holds
+# only within one run: do not re-run for a post that already went out.
+#
+#   scripts/send-post.sh ~/pr-hall-of-helix/posts/2026-10-08-test-outlet-parametrization.yaml test
+set -euo pipefail
+
+post=$(realpath "$1")
+channel=${2:-test}
+spec=${SPEC:-$HOME/pr-hall-of-helix/presence/telegram.yaml}
+port=${PORT:-18089}
+cd "$(dirname "$0")/.."
+
+read -r want reviewed < <(python3 -c '
+import sys, yaml
+d = yaml.safe_load(open(sys.argv[1]))
+print(d["channel"], d["request"].get("reviewed_by") or "-")' "$post")
+[ "$want" = "$channel" ] || { echo "post is for channel '$want', not '$channel'" >&2; exit 2; }
+[ "$reviewed" != "-" ] || { echo "request.reviewed_by is empty; a person reviews before sending" >&2; exit 2; }
+
+TELEGRAM_CHANNEL_ID=$(go run ./cmd/provision adapter-config --spec "$spec" --channel "$channel" \
+  | sed -n 's/^TELEGRAM_CHANNEL_ID=//p')
+[ -n "$TELEGRAM_CHANNEL_ID" ] || { echo "no chat id for channel '$channel'" >&2; exit 2; }
+
+tmp=$(mktemp -d)
+go build -o "$tmp/adapter" ./cmd/adapter
+
+token=$(bao kv get -mount=platform -field=token \
+  workloads/infotech/fluid-telegram/hall-of-helix/bot-token) \
+  || { rm -rf "$tmp"; echo "could not read the bot token from OpenBao (logged in?)" >&2; exit 2; }
+
+TELEGRAM_BOT_TOKEN=$token TELEGRAM_CHANNEL_ID=$TELEGRAM_CHANNEL_ID \
+  ADAPTER_LISTEN_ADDR=127.0.0.1:$port "$tmp/adapter" &
+pid=$!
+unset token
+trap 'kill $pid 2>/dev/null; rm -rf "$tmp"' EXIT
+
+for _ in $(seq 50); do
+  curl -s -o /dev/null "http://127.0.0.1:$port/" && break
+  sleep 0.1
+done
+
+python3 -c 'import sys, yaml, json; print(json.dumps(yaml.safe_load(open(sys.argv[1]))["request"]))' "$post" \
+  | curl -sS -w '\nHTTP %{http_code}\n' -X POST -H 'Content-Type: application/json' \
+      --data-binary @- "http://127.0.0.1:$port/v1/channel-posts"