diff --git a/CLAUDE.md b/CLAUDE.md
index 80dce9ab..659d8966 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -65,7 +65,7 @@ pnpm db:migrate:remote    # Apply to production D1 (requires auth)
 - **Cowork `result` billing**: each `type: "result"` record is one completed host-loop run's final bill — `usage`, `modelUsage`, `total_cost_usd` and `duration_ms` are per-run, not cumulative. Session totals are the sum over UUID-deduplicated results; never mix them with assistant `message.usage` snapshots (those are partial streams and undercount output badly), and never add `usage` to `modelUsage` or `total_cost_usd` to `modelUsage.*.costUSD`. Audits with no `result` records fall back to assistant snapshots plus the timestamp-gap duration estimate. `system/api_retry` maps to `apiErrors` with attempt metadata only — the raw error text is never stored.
 - **Provider-reported cost**: `ProviderParseResult.reportedCostUsd` wins over the local pricing table in `transform.ts`, which is what makes cost available for model generations `pricing.ts` does not know.
 - **opencode**: Sessions live in a SQLite DB at `~/.local/share/opencode/opencode.db` (`%LOCALAPPDATA%\\opencode` on Windows, `OPENCODE_DATA` env var wins). Tables: `session`/`message`/`part`; role/user and tool payloads are JSON in `message.data`/`part.data`. Discovery writes `<dbPath>#session:<id>` marker paths. Parse is SQLite-backed (`parseSessionFromDb`), so background scan uses a lightweight path from discovery-computed stats (`buildLightweightOpencodeScanResult` in `scanner.ts`) to avoid opening the DB per session. `sql.js` named-param binds need their `:`-prefix in the key — this provider uses positional `?` params instead. See `packages/provider-opencode/`.
-- **Hermes**: Sessions live in SQLite at `~/.hermes/state.db` (FTS5-backed). Tables: `sessions` (token/cost/git columns maintained by Hermes) + `messages` (OpenAI-style: assistant rows carry `tool_calls` JSON + `reasoning`; tool rows carry `tool_name` + `tool_call_id` + result content). Discovery writes `<dbPath>#session:<id>` marker paths and reads `~/.hermes/.update_check` for the version. Context compaction is recorded two ways: `compacted=1` rows (pre-compaction history, kept in full) and a user row prefixed `[CONTEXT COMPACTION` (→ `subtype: "compaction-summary"`, mirroring claude-code). Parse is SQLite-backed, so background scan uses `buildLightweightHermesScanResult` in `scanner.ts`. Tool names map to the viewer vocabulary in `tool-mapping.ts`. See `packages/provider-hermes/`.
+- **Hermes**: Sessions live in SQLite at `~/.hermes/state.db` (FTS5-backed), plus one DB per named profile at `~/.hermes/profiles/<name>/state.db`. Discovery scans all of them (`hermesDbPaths()` in `packages/provider-hermes/src/hermes/sqlite.ts`), dedups by session id, and writes `<dbPath>#session:<id>` marker paths; parse resolves the right DB from the marker before falling back to a scan. `hermesRootDir()` mirrors Hermes's `get_default_hermes_root()`: `HERMES_HOME` inside `~/.hermes` is profile mode (root stays `~/.hermes`); outside it, that path itself is the root. Caveat: sql.js reads raw file bytes and cannot replay un-checkpointed `-wal` frames, so sessions still sitting in the WAL (long-running gateway) are invisible until Hermes checkpoints. Tables: `sessions` (token/cost/git columns maintained by Hermes) + `messages` (OpenAI-style: assistant rows carry `tool_calls` JSON + `reasoning`; tool rows carry `tool_name` + `tool_call_id` + result content). Discovery writes `<dbPath>#session:<id>` marker paths and reads `~/.hermes/.update_check` for the version. Context compaction is recorded two ways: `compacted=1` rows (pre-compaction history, kept in full) and a user row prefixed `[CONTEXT COMPACTION` (→ `subtype: "compaction-summary"`, mirroring claude-code). Parse is SQLite-backed, so background scan uses `buildLightweightHermesScanResult` in `scanner.ts`. Tool names map to the viewer vocabulary in `tool-mapping.ts`. See `packages/provider-hermes/`.
 - **Skip `progress` lines**: These are subagent streaming artifacts in JSONL.
 - **sql.js (WASM)**: Used instead of native SQLite bindings for portability — no C++ compiler needed.
 - **Session discovery cache**: CLI picker + local dashboard use file cache at `~/.vibe-replay/cache/*.json` (stale-while-refresh UX). Cache validity is tied to CLI release version (`CLI_VERSION`) plus envelope version, so caches auto-invalidate across releases. Keep cache writes best-effort and never block generation/parsing on cache failures.
diff --git a/packages/provider-hermes/src/hermes/discover.ts b/packages/provider-hermes/src/hermes/discover.ts
index 070e5d3c..b2c8eba9 100644
--- a/packages/provider-hermes/src/hermes/discover.ts
+++ b/packages/provider-hermes/src/hermes/discover.ts
@@ -5,7 +5,7 @@ import type { Database } from "sql.js";
 import { cleanPromptText } from "@vibe-replay/provider-core/clean-prompt";
 import type { SessionInfo } from "@vibe-replay/provider-contract";
 import { shortenPath } from "@vibe-replay/provider-core/utils";
-import { hermesDataDir, hermesDbPath, openHermesDb } from "./sqlite.js";
+import { hermesDataDir, hermesDbPath, openAllHermesDbs } from "./sqlite.js";
 
 export const HERMES_PROVIDER = "hermes";
 
@@ -47,17 +47,34 @@ function rowValues(db: Database, sql: string, params: Record<string, any> = {}):
 }
 
 export async function discoverHermesSessions(): Promise<SessionInfo[]> {
-  const opened = await openHermesDb();
-  if (!opened) return [];
-  const { db } = opened;
+  const all = await openAllHermesDbs();
+  if (all.length === 0) return [];
+  const sessions: SessionInfo[] = [];
+  const seen = new Set<string>();
   try {
-    return listSessionsFromDb(db);
+    for (const { db, dbPath } of all) {
+      const fromDb = listSessionsFromDb(db, dbPath);
+      for (const s of fromDb) {
+        if (seen.has(s.sessionId)) continue;
+        seen.add(s.sessionId);
+        sessions.push(s);
+      }
+    }
   } finally {
-    db.close();
+    for (const { db } of all) {
+      try {
+        db.close();
+      } catch {
+        // ignore
+      }
+    }
   }
+  // Deterministic ordering: newest last_activity first across profiles.
+  sessions.sort((a, b) => b.timestamp.localeCompare(a.timestamp));
+  return sessions;
 }
 
-export function listSessionsFromDb(db: Database): SessionInfo[] {
+export function listSessionsFromDb(db: Database, dbPathOverride?: string): SessionInfo[] {
   const rows = rowValues(
     db,
     `
@@ -77,11 +94,12 @@ export function listSessionsFromDb(db: Database): SessionInfo[] {
   const statsBySession = buildSessionStats(db, rows);
 
   const version = hermesVersion();
+  const fallbackDbPath = dbPathOverride ?? hermesDbPath();
   const sessions: SessionInfo[] = [];
   for (const row of rows) {
     const stats = statsBySession.get(row.id);
     if (!stats) continue;
-    const info = sessionInfoFromRow(row, stats, version);
+    const info = sessionInfoFromRow(row, stats, version, fallbackDbPath);
     if (info) sessions.push(info);
   }
   return sessions;
@@ -180,14 +198,15 @@ function sessionInfoFromRow(
   row: HermesSessionRow,
   stats: SessionStats,
   version: string,
+  dbPath?: string,
 ): SessionInfo | null {
   if (!row.id) return null;
 
   const firstPrompt = cleanPromptText(stats.firstPrompt);
   if (!firstPrompt) return null;
 
-  const dbPath = hermesDbPath();
-  const markerPath = `${dbPath}#session:${row.id}`;
+  const resolvedDbPath = dbPath ?? hermesDbPath();
+  const markerPath = `${resolvedDbPath}#session:${row.id}`;
   const lastActivity = row.last_activity_at ?? row.ended_at ?? row.started_at;
 
   return {
diff --git a/packages/provider-hermes/src/hermes/parser.ts b/packages/provider-hermes/src/hermes/parser.ts
index 2c88ec05..73641391 100644
--- a/packages/provider-hermes/src/hermes/parser.ts
+++ b/packages/provider-hermes/src/hermes/parser.ts
@@ -9,7 +9,13 @@ import type {
   TokenUsage,
 } from "@vibe-replay/provider-contract";
 import { addParseWarning, compactWarningSample } from "@vibe-replay/provider-contract/warnings";
-import { openHermesDb, hermesDataDir, hermesDbPath } from "./sqlite.js";
+import {
+  hermesDataDir,
+  hermesDbPath,
+  hermesDbPaths,
+  openAllHermesDbs,
+  openHermesDb,
+} from "./sqlite.js";
 import { mapHermesToolArgs, mapHermesToolName } from "./tool-mapping.js";
 
 interface HermesMessageRow {
@@ -91,18 +97,76 @@ export async function parseHermesSession(
     );
   }
 
-  const opened = await openHermesDb();
-  if (!opened) {
-    throw new Error(`Hermes database not found at ${hermesDbPath()}`);
+  // Prefer the DB hinted by the marker path (fast path for the common case).
+  const hinted = hintedDbPath(paths, sessionInfo);
+  if (hinted) {
+    const opened = await openHermesDb(hinted);
+    if (opened) {
+      try {
+        const row = firstValue(opened.db, "SELECT id FROM sessions WHERE id = ?", {
+          sid: sessionId,
+        });
+        if (row) return parseSessionFromDb(opened.db, sessionId, sessionInfo, opened.dbPath);
+      } finally {
+        opened.db.close();
+      }
+    }
+  }
+
+  const all = await openAllHermesDbs();
+  if (all.length === 0) {
+    throw new Error(
+      `Hermes database not found (searched: ${hermesDbPaths().join(", ") || hermesDbPath()})`,
+    );
   }
-  const { db } = opened;
+  // Find the winning DB while handles are live, close everything, then re-open
+  // just the winner fresh for parsing — keeps WASM handle ownership simple.
+  let winnerPath: string | undefined;
+  for (const entry of all) {
+    try {
+      const row = firstValue(entry.db, "SELECT id FROM sessions WHERE id = ?", { sid: sessionId });
+      if (row) {
+        winnerPath = entry.dbPath;
+        break;
+      }
+    } catch {
+      // ignore per-DB probe errors
+    }
+  }
+  for (const { db } of all) {
+    try {
+      db.close();
+    } catch {
+      // ignore
+    }
+  }
+  if (!winnerPath) {
+    throw new Error(`Hermes session '${sessionId}' not found in any known database`);
+  }
+  const opened = await openHermesDb(winnerPath);
+  if (!opened) throw new Error(`Hermes session '${sessionId}' not found in any known database`);
   try {
-    return parseSessionFromDb(db, sessionId, sessionInfo);
+    return parseSessionFromDb(opened.db, sessionId, sessionInfo, winnerPath);
   } finally {
-    db.close();
+    opened.db.close();
   }
 }
 
+function hintedDbPath(paths: string[], sessionInfo?: SessionInfo): string | undefined {
+  for (const p of paths) {
+    const idx = p.indexOf("#session:");
+    if (idx >= 0) {
+      const dbPath = p.slice(0, idx);
+      if (dbPath) return dbPath;
+    }
+  }
+  const fp = (sessionInfo as unknown as { filePath?: string })?.filePath;
+  if (typeof fp === "string" && fp.includes("#session:")) {
+    return fp.split("#session:")[0];
+  }
+  return undefined;
+}
+
 /**
  * Extract the Hermes session id from the filePath markers written by
  * discovery (`<dbPath>#session:<id>`), or from sessionInfo, or from a raw
@@ -129,6 +193,7 @@ export function parseSessionFromDb(
   db: Database,
   sessionId: string,
   sessionInfo?: SessionInfo,
+  sourceDbPath?: string,
 ): ProviderParseResult {
   const session = firstValue(db, `SELECT * FROM sessions WHERE id = ?`, {
     sid: sessionId,
@@ -258,8 +323,8 @@ export function parseSessionFromDb(
 
   const defaultSource: DataSourceInfo = {
     primary: "sqlite",
-    sources: [hermesDbPath()],
-    notes: ["Discovered from the Hermes SQLite database (~/.hermes/state.db)."],
+    sources: [sourceDbPath ?? hermesDbPath()],
+    notes: ["Discovered from the Hermes SQLite database."],
   };
 
   return {
diff --git a/packages/provider-hermes/src/hermes/sqlite.ts b/packages/provider-hermes/src/hermes/sqlite.ts
index c301679b..4f711e06 100644
--- a/packages/provider-hermes/src/hermes/sqlite.ts
+++ b/packages/provider-hermes/src/hermes/sqlite.ts
@@ -1,8 +1,10 @@
 /// <reference path="../sql-js.d.ts" />
+import { existsSync, readdirSync, realpathSync } from "node:fs";
 import { readFile } from "node:fs/promises";
 import { homedir } from "node:os";
-import { join } from "node:path";
+import { basename, dirname, isAbsolute, join, relative, resolve } from "node:path";
 import type { Database, SqlJsStatic } from "sql.js";
+import type { Dirent } from "node:fs";
 
 export const HERMES_DIRNAME = ".hermes";
 export const HERMES_DB_FILENAME = "state.db";
@@ -19,6 +21,64 @@ export function hermesDbPath(): string {
   return join(hermesDataDir(), HERMES_DB_FILENAME);
 }
 
+function resolveExisting(p: string): string {
+  try {
+    return realpathSync(p);
+  } catch {
+    return p;
+  }
+}
+
+/**
+ * Root directory that holds the default DB and the named profiles — mirrors
+ * Hermes's own `get_default_hermes_root()`:
+ *
+ * - No `HERMES_HOME`: root is `~/.hermes`.
+ * - `HERMES_HOME` inside `~/.hermes` (profile mode, e.g. a path under
+ *   `~/.hermes/profiles/`): root stays `~/.hermes` so all profiles are visible.
+ * - `HERMES_HOME` outside `~/.hermes` (Docker/custom deployment): root is
+ *   `HERMES_HOME` itself — unless it points at `<root>/profiles/<name>`, in
+ *   which case root is that grandparent.
+ */
+export function hermesRootDir(): string {
+  const envHome = process.env.HERMES_HOME;
+  const nativeHome = join(homedir(), HERMES_DIRNAME);
+  if (!envHome) return nativeHome;
+  const envPath = resolveExisting(resolve(envHome));
+  const rel = relative(resolveExisting(nativeHome), envPath);
+  if (rel === "" || (!rel.startsWith("..") && !isAbsolute(rel))) {
+    return nativeHome;
+  }
+  if (basename(dirname(envPath)) === "profiles") {
+    return dirname(dirname(envPath));
+  }
+  return envPath;
+}
+
+/**
+ * All `state.db` paths that belong to this Hermes install: the default home
+ * plus every named profile's DB (`<root>/profiles/<name>/state.db`). Missing
+ * locations are skipped so partial installs still work.
+ */
+export function hermesDbPaths(): string[] {
+  const out: string[] = [];
+  const defaultDb = join(hermesRootDir(), HERMES_DB_FILENAME);
+  if (existsSync(defaultDb)) out.push(defaultDb);
+  const profilesDir = join(hermesRootDir(), "profiles");
+  let entries: Dirent[] = [];
+  try {
+    entries = readdirSync(profilesDir, { withFileTypes: true });
+  } catch {
+    // no profiles dir — default DB only
+  }
+  for (const entry of entries) {
+    if (!entry.isDirectory()) continue;
+    const p = join(profilesDir, entry.name, HERMES_DB_FILENAME);
+    if (existsSync(p)) out.push(p);
+  }
+  return out;
+}
+
 export function createRetryableInit<T>(factory: () => Promise<T>): () => Promise<T> {
   let promise: Promise<T> | null = null;
   return async () => {
@@ -67,6 +127,21 @@ export async function openHermesDb(
   }
 }
 
+/**
+ * Open each known Hermes DB (default + profiles). Useful for discovery and
+ * for parsing a session that could live in any profile.
+ */
+export async function openAllHermesDbs(): Promise<Array<{ db: Database; dbPath: string }>> {
+  const paths = hermesDbPaths();
+  if (paths.length === 0) return [];
+  const out: Array<{ db: Database; dbPath: string }> = [];
+  for (const p of paths) {
+    const opened = await openHermesDb(p);
+    if (opened) out.push(opened);
+  }
+  return out;
+}
+
 /** True when the session id looks like a Hermes session id (`YYYYMMDD_HHMMSS_...`). */
 export function isHermesSessionId(value: string): boolean {
   return /^\d{8}_\d{6}_/.test(value) || value.startsWith("session_");
diff --git a/packages/provider-hermes/src/hermes/tool-mapping.ts b/packages/provider-hermes/src/hermes/tool-mapping.ts
index e9dbf245..dbf32637 100644
--- a/packages/provider-hermes/src/hermes/tool-mapping.ts
+++ b/packages/provider-hermes/src/hermes/tool-mapping.ts
@@ -25,6 +25,20 @@ export function mapHermesToolName(name: string): string {
     execute_code: "ExecuteCode",
     session_search: "SessionSearch",
     text_to_speech: "TextToSpeech",
+    // Browser + cron + memory tools: no special scene handling in the
+    // transform yet, but CamelCase ids read better than raw snake_case in
+    // tool lists and labels.
+    browser_navigate: "BrowserNavigate",
+    browser_click: "BrowserClick",
+    browser_type: "BrowserType",
+    browser_snapshot: "BrowserSnapshot",
+    browser_console: "BrowserConsole",
+    browser_scroll: "BrowserScroll",
+    browser_press: "BrowserPress",
+    browser_get_images: "BrowserImages",
+    cronjob: "Cron",
+    memory: "Memory",
+    codex: "Codex",
   };
   return mapping[name] || name;
 }
diff --git a/packages/provider-hermes/src/sql-js.d.ts b/packages/provider-hermes/src/sql-js.d.ts
index 89b4aec6..8d3ed593 100644
--- a/packages/provider-hermes/src/sql-js.d.ts
+++ b/packages/provider-hermes/src/sql-js.d.ts
@@ -19,6 +19,8 @@ declare module "sql.js" {
     exec(sql: string, params?: any[]): QueryExecResult[];
     prepare(sql: string): Statement;
     run(sql: string, params?: any[] | Record<string, any>): Database;
+    /** Dump the database contents as SQLite file bytes (e.g. for persisting to disk). */
+    export(): Uint8Array;
     close(): void;
   }
 
diff --git a/packages/provider-hermes/test/discover.test.ts b/packages/provider-hermes/test/discover.test.ts
index 358f1d6c..b604916e 100644
--- a/packages/provider-hermes/test/discover.test.ts
+++ b/packages/provider-hermes/test/discover.test.ts
@@ -1,5 +1,8 @@
+import { mkdtempSync, mkdirSync, realpathSync, rmSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
 import { describe, expect, it } from "vitest";
-import { listSessionsFromDb } from "../src/hermes/discover.js";
+import { discoverHermesSessions, listSessionsFromDb } from "../src/hermes/discover.js";
 import { resolveSessionId } from "../src/hermes/parser.js";
 import { buildHermesDb, toolCallsFor } from "./helpers/db.js";
 
@@ -124,3 +127,120 @@ describe("hermes discover", () => {
     expect(resolveSessionId(["/some/other/path.jsonl"])).toBeUndefined();
   });
 });
+
+describe("hermes multi-profile discovery", () => {
+  it("merges sessions from the default DB and profile DBs with correct marker paths", async () => {
+    const home = realpathSync(mkdtempSync(join(tmpdir(), "vibe-replay-hermes-")));
+    const prevHermesHome = process.env.HERMES_HOME;
+    process.env.HERMES_HOME = home;
+    try {
+      mkdirSync(join(home, "profiles", "codex"), { recursive: true });
+
+      // Default DB: one legacy session.
+      const defaultDb = await buildHermesDb({
+        sessions: [
+          {
+            id: "20260801_090000_default",
+            cwd: "/Users/test/legacy",
+            startedAt: 1_700_000_000,
+            lastActivityAt: 1_700_000_100,
+          },
+        ],
+        messages: [
+          {
+            id: 1,
+            sessionId: "20260801_090000_default",
+            role: "user",
+            content: "legacy default session",
+            timestamp: 1_700_000_001,
+          },
+        ],
+      });
+      writeFileSync(join(home, "state.db"), defaultDb.export());
+      defaultDb.close();
+
+      // Profile DB: one newer session.
+      const profileDb = await buildHermesDb({
+        sessions: [
+          {
+            id: "20260822_222249_profile",
+            cwd: "/Users/test/codex",
+            startedAt: 1_800_000_000,
+            lastActivityAt: 1_800_000_200,
+          },
+        ],
+        messages: [
+          {
+            id: 1,
+            sessionId: "20260822_222249_profile",
+            role: "user",
+            content: "active profile session",
+            timestamp: 1_800_000_001,
+          },
+        ],
+      });
+      writeFileSync(join(home, "profiles", "codex", "state.db"), profileDb.export());
+      profileDb.close();
+
+      const sessions = await discoverHermesSessions();
+      expect(sessions).toHaveLength(2);
+
+      const byId = new Map(sessions.map((s) => [s.sessionId, s]));
+      expect(byId.get("20260822_222249_profile")?.filePath).toBe(
+        `${join(home, "profiles", "codex", "state.db")}#session:20260822_222249_profile`,
+      );
+      expect(byId.get("20260801_090000_default")?.filePath).toBe(
+        `${join(home, "state.db")}#session:20260801_090000_default`,
+      );
+
+      // Newest activity first across profiles.
+      expect(sessions[0].sessionId).toBe("20260822_222249_profile");
+    } finally {
+      if (prevHermesHome === undefined) delete process.env.HERMES_HOME;
+      else process.env.HERMES_HOME = prevHermesHome;
+      rmSync(home, { recursive: true, force: true });
+    }
+  });
+
+  it("deduplicates a session id present in more than one database", async () => {
+    const home = realpathSync(mkdtempSync(join(tmpdir(), "vibe-replay-hermes-")));
+    const prevHermesHome = process.env.HERMES_HOME;
+    process.env.HERMES_HOME = home;
+    try {
+      mkdirSync(join(home, "profiles", "copy"), { recursive: true });
+
+      for (const dir of [home, join(home, "profiles", "copy")]) {
+        const db = await buildHermesDb({
+          sessions: [
+            {
+              id: "20260803_100000_dupe",
+              cwd: "/Users/test/project",
+              startedAt: 1_750_000_000,
+              lastActivityAt: 1_750_000_100,
+            },
+          ],
+          messages: [
+            {
+              id: 1,
+              sessionId: "20260803_100000_dupe",
+              role: "user",
+              content: "duplicated session",
+              timestamp: 1_750_000_001,
+            },
+          ],
+        });
+        writeFileSync(join(dir, "state.db"), db.export());
+        db.close();
+      }
+
+      const sessions = await discoverHermesSessions();
+      expect(sessions).toHaveLength(1);
+      // The default DB is scanned first and wins the dedup.
+      expect(sessions[0].filePath.startsWith(`${join(home, "state.db")}#session:`)).toBe(true);
+    } finally {
+      if (prevHermesHome === undefined) delete process.env.HERMES_HOME;
+      else process.env.HERMES_HOME = prevHermesHome;
+      rmSync(home, { recursive: true, force: true });
+    }
+  });
+});
diff --git a/packages/provider-hermes/test/parser.test.ts b/packages/provider-hermes/test/parser.test.ts
index d463b7e6..fc91af25 100644
--- a/packages/provider-hermes/test/parser.test.ts
+++ b/packages/provider-hermes/test/parser.test.ts
@@ -379,4 +379,27 @@ describe("hermes parser", () => {
       db.close();
     }
   });
+
+  it("reports the producing database path in dataSourceInfo when provided", async () => {
+    const db = await buildHermesDb({
+      sessions: [baseSession],
+      messages: [
+        {
+          id: 1,
+          sessionId: baseSession.id,
+          role: "user",
+          content: "profile session prompt",
+          timestamp: 1_800_000_001,
+        },
+      ],
+    });
+
+    try {
+      const profileDbPath = "/Users/test/.hermes/profiles/codex/state.db";
+      const result = parseSessionFromDb(db, baseSession.id, undefined, profileDbPath);
+      expect(result.dataSourceInfo?.sources).toEqual([profileDbPath]);
+    } finally {
+      db.close();
+    }
+  });
 });
diff --git a/packages/provider-hermes/test/sqlite.test.ts b/packages/provider-hermes/test/sqlite.test.ts
new file mode 100644
index 00000000..85dadc08
--- /dev/null
+++ b/packages/provider-hermes/test/sqlite.test.ts
@@ -0,0 +1,19 @@
+import { describe, expect, it } from "vitest";
+import { isHermesSessionId } from "../src/hermes/sqlite.js";
+
+describe("isHermesSessionId", () => {
+  it("recognizes timestamp-prefixed session ids", () => {
+    expect(isHermesSessionId("20260804_202053_7b0f72")).toBe(true);
+    expect(isHermesSessionId("20260822_222249_29dd93")).toBe(true);
+  });
+
+  it("recognizes legacy session_ prefixed ids", () => {
+    expect(isHermesSessionId("session_abc123")).toBe(true);
+  });
+
+  it("rejects unrelated strings", () => {
+    expect(isHermesSessionId("ses_111")).toBe(false);
+    expect(isHermesSessionId("/some/path.jsonl")).toBe(false);
+    expect(isHermesSessionId("")).toBe(false);
+  });
+});