diff --git a/CHANGELOG.md b/CHANGELOG.md
index ca737b0..40e71f1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,14 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+## [0.10.0] - 2026-09-17
+
+Cognition's Devin and Mistral AI's Mistral Vibe join the session list. Devin
+is the first provider whose sessions are rows in one shared database rather
+than files, so adapters can now say for themselves what changed; both are
+read-only. New provider and harness raw values (`devin`, `mistralVibe`) land
+in host caches.
+
 ### Added
 
 - **`DevinSessionAdapter`** — Cognition's Devin is a listed, readable,
@@ -47,6 +55,10 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
   database.
 - The Rust lane knows both providers: raw values `devin` and `mistralVibe`,
   the same harness storage keys, resume commands, and id validation.
+- `JSONLHeadTail.headLines(url:count:maxBytes:)` — an optional byte budget
+  for the head read. A spent budget ends at the last whole line, so one
+  oversized or newline-free first record cannot pull a log into memory;
+  Mistral Vibe's title scan reads at most 1 MiB.
 
 ### Changed
 
diff --git a/Cargo.lock b/Cargo.lock
index 7c4e64b..336545c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,7 +4,7 @@ version = 4
 
 [[package]]
 name = "agent-session-core"
-version = "0.9.0"
+version = "0.10.0"
 dependencies = [
  "rusqlite",
  "serde",
diff --git a/implementations/rust/crates/agent-session-core/Cargo.toml b/implementations/rust/crates/agent-session-core/Cargo.toml
index 776f05c..7275cf2 100644
--- a/implementations/rust/crates/agent-session-core/Cargo.toml
+++ b/implementations/rust/crates/agent-session-core/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "agent-session-core"
-version = "0.9.0"
+version = "0.10.0"
 edition = "2021"
 license = "AGPL-3.0-only"
 description = "Cross-platform Rust implementation of agent-session-kit's session reading: index queries, lightweight discovery, transcripts, and resume commands."
diff --git a/implementations/swift/Sources/AgentSessionKit/AgentSessionKitInfo.swift b/implementations/swift/Sources/AgentSessionKit/AgentSessionKitInfo.swift
index 2125546..b48abc7 100644
--- a/implementations/swift/Sources/AgentSessionKit/AgentSessionKitInfo.swift
+++ b/implementations/swift/Sources/AgentSessionKit/AgentSessionKitInfo.swift
@@ -19,7 +19,7 @@ public enum AgentSessionKitInfo {
     ///
     /// Semver, bare — no `v` prefix, matching the tags. Bumping it is part
     /// of the release commit; see `RELEASING.md`.
-    public static let version = "0.9.0"
+    public static let version = "0.10.0"
 
     /// Where the package lives. Public because a host that shows the
     /// version usually wants somewhere to send the reader.