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COD-145 show last (most recent) prompt alongside first in session manager

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Building on COD-140's firstPrompt backfill, surface each session's most
recent user prompt too, so a long-running session is identifiable by both
where it started and where it is now.

- session-routes: add extractLastUserPrompt() (mirrors extractFirstUserPrompt
  with last-match semantics + same noise/secret/slash-command filters + 120
  cap); scanProjectDir computes lastPrompt from the file tail (reads a tail for
  large files; small files scan head); thread lastPrompt through HistorySession
  and the /api/sessions/unified history rows.
- unified-session-service: add lastPrompt to UnifiedSessionItem + HistoryInput,
  set it from history in the merge, and extend the backfill with parallel
  by-uuid / newest-by-workingDir indexes (never overwrites); add lastPrompt to
  the filterAndPaginate search haystack.
- terminal-ui: render a 'Last prompt' detail row, omitted when absent or equal
  to the first prompt (single-prompt sessions show one line).

Tests: unified-session-service.test.ts +5 (uuid-join, workingDir fallback,
newest-wins, no-overwrite, search). Beta-verified: /api/sessions/unified
populated firstPrompt+lastPrompt on all 200 rows (12 distinct); Playwright on
the session-manager modal rendered 12 'Last prompt' rows, 0 console errors.

(cherry picked from commit 115f4d397e91decc1a6381b47a99d74922e9055b)
This commit is contained in:
Aamer Akhter
2026-07-17 16:31:09 -04:00
parent b27a0e9188
commit 5ec71ace5a
4 changed files with 245 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/services/unified-session-service.ts
+42 -17
View File
@@ -28,6 +28,8 @@ export type UnifiedSessionItem = {
lastActivityAt?: number;
claudeSessionId?: string;
firstPrompt?: string;
/** Most recent user prompt from the transcript (COD-145), parallel to firstPrompt. */
lastPrompt?: string;
sizeBytes?: number;
projectKey?: string;
remote?: boolean;
@@ -85,6 +87,8 @@ export type HistoryInput = {
sizeBytes: number;
lastModified: string;
firstPrompt?: string;
/** Most recent user prompt from the transcript (COD-145). */
lastPrompt?: string;
projectKey?: string;
};
@@ -157,6 +161,7 @@ export function mergeUnifiedSessions(sources: UnifiedSources): UnifiedSessionIte
overwrite(item, 'workingDir', h.workingDir);
overwrite(item, 'sizeBytes', h.sizeBytes);
overwrite(item, 'firstPrompt', h.firstPrompt);
overwrite(item, 'lastPrompt', h.lastPrompt);
overwrite(item, 'projectKey', h.projectKey);
const ms = Date.parse(h.lastModified);
if (!Number.isNaN(ms) && item.lastActivityAt === undefined) item.lastActivityAt = ms;
@@ -223,30 +228,50 @@ export function mergeUnifiedSessions(sources: UnifiedSources): UnifiedSessionIte
// firstPrompt (so rows keyed to their own transcript are untouched).
const firstPromptByUuid = new Map<string, string>();
const firstPromptByWorkingDir = new Map<string, { prompt: string; ms: number }>();
// COD-145: lastPrompt rides the same backfill (build parallel indexes; never overwrite).
const lastPromptByUuid = new Map<string, string>();
const lastPromptByWorkingDir = new Map<string, { prompt: string; ms: number }>();
for (const h of sources.history ?? []) {
if (!h.firstPrompt) continue;
firstPromptByUuid.set(h.sessionId, h.firstPrompt);
if (h.workingDir) {
const ms = Date.parse(h.lastModified);
const ts = Number.isNaN(ms) ? -Infinity : ms;
const existing = firstPromptByWorkingDir.get(h.workingDir);
if (!existing || ts > existing.ms) {
firstPromptByWorkingDir.set(h.workingDir, { prompt: h.firstPrompt, ms: ts });
const ms = Date.parse(h.lastModified);
const ts = Number.isNaN(ms) ? -Infinity : ms;
if (h.firstPrompt) {
firstPromptByUuid.set(h.sessionId, h.firstPrompt);
if (h.workingDir) {
const existing = firstPromptByWorkingDir.get(h.workingDir);
if (!existing || ts > existing.ms) {
firstPromptByWorkingDir.set(h.workingDir, { prompt: h.firstPrompt, ms: ts });
}
}
}
if (h.lastPrompt) {
lastPromptByUuid.set(h.sessionId, h.lastPrompt);
if (h.workingDir) {
const existing = lastPromptByWorkingDir.get(h.workingDir);
if (!existing || ts > existing.ms) {
lastPromptByWorkingDir.set(h.workingDir, { prompt: h.lastPrompt, ms: ts });
}
}
}
}
for (const item of map.values()) {
if (item.firstPrompt) continue; // never overwrite an existing non-empty prompt
if (item.claudeSessionId) {
const byUuid = firstPromptByUuid.get(item.claudeSessionId);
if (!item.firstPrompt) {
// never overwrite an existing non-empty prompt
const byUuid = item.claudeSessionId ? firstPromptByUuid.get(item.claudeSessionId) : undefined;
if (byUuid) {
item.firstPrompt = byUuid;
continue;
} else if (item.workingDir) {
const byDir = firstPromptByWorkingDir.get(item.workingDir);
if (byDir) item.firstPrompt = byDir.prompt;
}
}
if (item.workingDir) {
const byDir = firstPromptByWorkingDir.get(item.workingDir);
if (byDir) item.firstPrompt = byDir.prompt;
if (!item.lastPrompt) {
const byUuid = item.claudeSessionId ? lastPromptByUuid.get(item.claudeSessionId) : undefined;
if (byUuid) {
item.lastPrompt = byUuid;
} else if (item.workingDir) {
const byDir = lastPromptByWorkingDir.get(item.workingDir);
if (byDir) item.lastPrompt = byDir.prompt;
}
}
}
@@ -300,7 +325,7 @@ export function mergeUnifiedSessions(sources: UnifiedSources): UnifiedSessionIte
}
/**
* Case-insensitive substring filter (name + firstPrompt + workingDir + sessionId)
* Case-insensitive substring filter (name + firstPrompt + lastPrompt + workingDir + sessionId)
* with offset/limit paging. `total` is the filtered count BEFORE paging.
*/
export function filterAndPaginate(
@@ -310,7 +335,7 @@ export function filterAndPaginate(
const q = (opts.q ?? '').trim().toLowerCase();
const filtered = q
? items.filter((it) => {
const hay = [it.name, it.firstPrompt, it.workingDir, it.sessionId]
const hay = [it.name, it.firstPrompt, it.lastPrompt, it.workingDir, it.sessionId]
.filter((v): v is string => typeof v === 'string')
.join(' ')
.toLowerCase();