feat(cli): add trajectory stats tracking and completion summary (#773)

Co-authored-by: Letta <noreply@letta.com>

src/cli/helpers/accumulator.ts

@@ -174,6 +174,13 @@ export type Line =
       id: string;
       lines: string[]; // Multi-line status message with arrow formatting
     }
+  | {
+      kind: "trajectory_summary";
+      id: string;
+      durationMs: number;
+      stepCount: number;
+      verb: string;
+    }
   | { kind: "separator"; id: string };
 
 /**

src/cli/helpers/thinkingMessages.ts

@@ -43,6 +43,52 @@ const THINKING_VERBS = [
   "internalizing",
 ] as const;
 
+type ThinkingVerb = (typeof THINKING_VERBS)[number];
+
+const PAST_TENSE_VERBS: Record<ThinkingVerb, string> = {
+  thinking: "thought",
+  processing: "processed",
+  computing: "computed",
+  calculating: "calculated",
+  analyzing: "analyzed",
+  synthesizing: "synthesized",
+  deliberating: "deliberated",
+  cogitating: "cogitated",
+  reflecting: "reflected",
+  reasoning: "reasoned",
+  spinning: "spun",
+  focusing: "focused",
+  machinating: "machinated",
+  contemplating: "contemplated",
+  ruminating: "ruminated",
+  considering: "considered",
+  pondering: "pondered",
+  evaluating: "evaluated",
+  assessing: "assessed",
+  inferring: "inferred",
+  deducing: "deduced",
+  interpreting: "interpreted",
+  formulating: "formulated",
+  strategizing: "strategized",
+  orchestrating: "orchestrated",
+  optimizing: "optimized",
+  calibrating: "calibrated",
+  indexing: "indexed",
+  compiling: "compiled",
+  rendering: "rendered",
+  executing: "executed",
+  initializing: "initialized",
+  "absolutely right": "was absolutely right",
+  "thinking about thinking": "thought about thinking",
+  metathinking: "did metathinking",
+  learning: "learned",
+  adapting: "adapted",
+  evolving: "evolved",
+  remembering: "remembered",
+  absorbing: "absorbed",
+  internalizing: "internalized",
+};
+
 // Get a random thinking verb (e.g., "thinking", "processing")
 function getRandomVerb(): string {
   const index = Math.floor(Math.random() * THINKING_VERBS.length);
@@ -54,6 +100,12 @@ export function getRandomThinkingVerb(): string {
   return `is ${getRandomVerb()}`;
 }
 
+// Get a random past tense verb (e.g., "thought", "processed")
+export function getRandomPastTenseVerb(): string {
+  const verb = getRandomVerb() as ThinkingVerb;
+  return PAST_TENSE_VERBS[verb] ?? "completed";
+}
+
 // Get a random thinking message (full string with agent name)
 export function getRandomThinkingMessage(agentName?: string | null): string {
   const verb = getRandomVerb();