[Improve] Allow trailing punctuation on kickoff messages

packages/cloud-agents/evals/router/prompts/routing.ts

@@ -149,7 +149,7 @@ Respond with a single JSON object containing exactly these fields:
 - "workspaceValue" (string): Name of the chosen environment.
 - "reasoning" (string): Brief explanation of your workspace decision.
 - "confidence" (number): Confidence in the workspace choice from 0 to 1.
-- "kickoffMessage" (string or null): Full short user-facing kickoff sentence (about 8-18 words). Naturally include the chosen environment name, and naturally include the model display name when requestedModelId is a real model. Vary wording; no "Getting started on your task in…" boilerplate every time. No emojis, markdown, quotes, mentions, or trailing period.
+- "kickoffMessage" (string or null): Full short user-facing kickoff sentence (about 8-18 words). Naturally include the chosen environment name, and naturally include the model display name when requestedModelId is a real model. Vary wording; no "Getting started on your task in…" boilerplate every time. No emojis, markdown, quotes, or mentions.
 - "needsExternalLookup" (boolean): Whether an external reference must be fetched before routing, per the external lookup rules.
 - "externalReference" (string or null): The exact external reference to fetch when needsExternalLookup is true, otherwise null.
 - "requestedModelId" (string or null): The model id the user explicitly requested from the Available Models list, or the literal "${NO_MODEL_MENTIONED_VALUE}" when the user does not name a model.

packages/cloud-agents/src/server/router/prompts/routing-prompt.ts

@@ -54,7 +54,7 @@ Also always set \`kickoffMessage\` to the full short user-facing kickoff for cha
   - "Checking mobile login redirects in Payments with Opus 4.8"
   - "Digging into the flaky checkout email race in Full Stack"
 - The environment and model names in the sentence must match the Available lists exactly (same spelling/casing as shown).
-- Do not include emojis, markdown, quotes, @-mentions, Slack markup, or a trailing period.
+- Do not include emojis, markdown, quotes, @-mentions, or Slack markup.
 - Do not invent environment or model names that are not in the provided lists.
 - Always produce a non-empty kickoffMessage for real routed tasks. Keep routing justification in \`reasoning\`; keep the spoken kickoff in \`kickoffMessage\`.`;
 

packages/cloud-agents/src/server/router/routing-resolution.ts

@@ -47,7 +47,7 @@ export const workspaceResponseSchema = z.object({
     .string()
     .nullable()
     .describe(
-      'Full short user-facing kickoff sentence posted in chat (about 8-18 words). Naturally include the exact chosen environment name, and when requestedModelId is a real model also naturally include that model display name from the Available Models list. Vary the wording; do not always use "Getting started on your task in…". No emojis, markdown, quotes, mentions, or trailing period. Always provide a non-empty value for real routed tasks.',
+      'Full short user-facing kickoff sentence posted in chat (about 8-18 words). Naturally include the exact chosen environment name, and when requestedModelId is a real model also naturally include that model display name from the Available Models list. Vary the wording; do not always use "Getting started on your task in…". No emojis, markdown, quotes, or mentions. Always provide a non-empty value for real routed tasks.',
     )
     .optional()
     .default(null),

packages/communication/src/chat-messages.ts

@@ -167,7 +167,6 @@ export function normalizeKickoffMessage(
   // mentions or special link markup when inserted into a section block.
   text = text.replace(SLACK_CONTROL_TOKEN_PATTERN, ' ').replace(/[<>]/g, ' ');
   text = text.replace(/\s+/g, ' ').trim();
-  text = text.replace(/\.+$/, '').trim();
 
   if (!text) {
     return undefined;