feat: optimize heartbeat token usage

Co-Authored-By: Paperclip <noreply@paperclip.ing>

packages/adapters/claude-local/src/server/execute.ts

@@ -12,6 +12,7 @@ import {
   parseObject,
   parseJson,
   buildPaperclipEnv,
+  joinPromptSections,
   redactEnvForLogs,
   ensureAbsoluteDirectory,
   ensureCommandResolvable,
@@ -363,7 +364,8 @@ export async function execute(ctx: AdapterExecutionContext): Promise<AdapterExec
       `[paperclip] Claude session "${runtimeSessionId}" was saved for cwd "${runtimeSessionCwd}" and will not be resumed in "${cwd}".\n`,
     );
   }
-  const prompt = renderTemplate(promptTemplate, {
+  const bootstrapPromptTemplate = asString(config.bootstrapPromptTemplate, "");
+  const templateData = {
     agentId: agent.id,
     companyId: agent.companyId,
     runId,
@@ -371,7 +373,24 @@ export async function execute(ctx: AdapterExecutionContext): Promise<AdapterExec
     agent,
     run: { id: runId, source: "on_demand" },
     context,
-  });
+  };
+  const renderedPrompt = renderTemplate(promptTemplate, templateData);
+  const renderedBootstrapPrompt =
+    !sessionId && bootstrapPromptTemplate.trim().length > 0
+      ? renderTemplate(bootstrapPromptTemplate, templateData).trim()
+      : "";
+  const sessionHandoffNote = asString(context.paperclipSessionHandoffMarkdown, "").trim();
+  const prompt = joinPromptSections([
+    renderedBootstrapPrompt,
+    sessionHandoffNote,
+    renderedPrompt,
+  ]);
+  const promptMetrics = {
+    promptChars: prompt.length,
+    bootstrapPromptChars: renderedBootstrapPrompt.length,
+    sessionHandoffChars: sessionHandoffNote.length,
+    heartbeatPromptChars: renderedPrompt.length,
+  };
 
   const buildClaudeArgs = (resumeSessionId: string | null) => {
     const args = ["--print", "-", "--output-format", "stream-json", "--verbose"];
@@ -416,6 +435,7 @@ export async function execute(ctx: AdapterExecutionContext): Promise<AdapterExec
         commandNotes,
         env: redactEnvForLogs(env),
         prompt,
+        promptMetrics,
         context,
       });
     }