Improve chat composer typing performance

Add foldable split-pane layout
Fix Sybil release paths
2026-08-13 00:08:15 -07:00 · 2026-08-06 23:28:42 -07:00 · 2026-07-27 17:36:31 -07:00 · 2026-07-27 17:29:47 -07:00 · 2026-07-26 17:44:45 -07:00 · 2026-07-26 17:37:39 -07:00
16 changed files with 545 additions and 363 deletions
--- a/.gitea/workflows/testflight.yml
+++ b/.gitea/workflows/testflight.yml
@@ -1,44 +1,39 @@
 name: TestFlight

 on:
-  workflow_dispatch:
  push:
    tags:
-      - "release/ios/v*"
+      - "release/ios/v*.*.*"

 jobs:
  testflight:
+    name: Build and upload
    runs-on: macos-arm64
+    timeout-minutes: 90

    steps:
-      - name: Checkout
+      - name: Check out the release tag
        uses: actions/checkout@v4

-      - name: Setup Ruby
+      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
-          ruby-version: "3.1.7"
+          ruby-version: "3.3.11"
          bundler-cache: true
          working-directory: ios

      - name: Install XcodeGen
        run: command -v xcodegen >/dev/null 2>&1 || brew install xcodegen

-      - name: Upload to TestFlight
+      - name: Build and upload to TestFlight
        working-directory: ios
        env:
-          APP_STORE_CONNECT_KEY_ID: ${{ secrets.APP_STORE_CONNECT_KEY_ID }}
-          APP_STORE_CONNECT_ISSUER_ID: ${{ secrets.APP_STORE_CONNECT_ISSUER_ID }}
-          APP_STORE_CONNECT_KEY_CONTENT: ${{ secrets.APP_STORE_CONNECT_KEY_CONTENT }}
+          ASC_KEY_ID: ${{ secrets.ASC_KEY_ID }}
+          ASC_ISSUER_ID: ${{ secrets.ASC_ISSUER_ID }}
+          ASC_KEY: ${{ secrets.ASC_KEY }}
          MATCH_PASSWORD: ${{ secrets.MATCH_PASSWORD }}
-          MATCH_GIT_URL: ${{ secrets.MATCH_GIT_URL }}
          MATCH_GIT_BASIC_AUTHORIZATION: ${{ secrets.MATCH_GIT_BASIC_AUTHORIZATION }}
-          SYBIL_BUILD_NUMBER: ${{ github.run_number }}
+          CI: "true"
          FASTLANE_SKIP_UPDATE_CHECK: "1"
-          FASTLANE_XCODEBUILD_SETTINGS_TIMEOUT: "120"
-        # act_runner does not propagate setup-ruby's PATH changes into later
-        # steps, so put the selected Ruby back on PATH or `bundle` resolves to
-        # the toolcache default and misses the gems installed above.
-        run: |
-          export PATH="/Users/runner/hostedtoolcache/Ruby/3.1.7/arm64/bin:${PATH}"
-          bundle exec fastlane ios beta
+          FASTLANE_HIDE_CHANGELOG: "1"
+        run: bundle exec fastlane ios beta
--- a/ios/.env.example
+++ b/ios/.env.example
@@ -1,24 +1,5 @@
-FASTLANE_APP_IDENTIFIER=net.buzzert.sybil2
-FASTLANE_TEAM_ID=DQQH5H6GBD
-FASTLANE_SKIP_UPDATE_CHECK=1
-FASTLANE_HIDE_CHANGELOG=1
-SYBIL_APP_STORE_APPLE_ID=6759442828
-SYBIL_PROVIDER_PUBLIC_ID=c043d167-ad88-4036-84ea-76c223f1b1b2
-SYBIL_PROVISIONING_PROFILE_SPECIFIER=Sybil AppStore CI
-SYBIL_PROVISIONING_PROFILE_UUID=
-SYBIL_CODE_SIGN_IDENTITY=Apple Distribution: James Magahern (DQQH5H6GBD)
-SYBIL_XCODE_CODE_SIGN_IDENTITY=6B74B268C4761720FB2051D01D8BB3E47B55D9F5
-SYBIL_EXPORT_SIGNING_CERTIFICATE=Apple Distribution
-SYBIL_SIGNING_CERTIFICATE_ID=
-SYBIL_SIGNING_KEYCHAIN=
-
-# App Store Connect API key settings for TestFlight upload and signing setup.
-APP_STORE_CONNECT_API_KEY_ID=
-APP_STORE_CONNECT_API_ISSUER_ID=
-APP_STORE_CONNECT_API_KEY_PATH=
-APP_STORE_CONNECT_API_KEY_CONTENT=
-APP_STORE_CONNECT_API_KEY_CONTENT_BASE64=false
-
-# Optional deployment overrides.
-SYBIL_BUILD_NUMBER=
-SYBIL_VERSION_TAG=
+ASC_KEY_ID=
+ASC_ISSUER_ID=
+ASC_KEY=
+MATCH_PASSWORD=
+MATCH_GIT_BASIC_AUTHORIZATION=
--- a/ios/Gemfile
+++ b/ios/Gemfile
@@ -1,3 +1,3 @@
 source "https://rubygems.org"

-gem "fastlane"
+gem "fastlane", "2.237.0"
--- a/ios/Gemfile.lock
+++ b/ios/Gemfile.lock
@@ -1,46 +1,49 @@
 GEM
  remote: https://rubygems.org/
  specs:
-    CFPropertyList (3.0.9)
+    CFPropertyList (3.0.8)
    abbrev (0.1.2)
    addressable (2.9.0)
      public_suffix (>= 2.0.2, < 8.0)
    artifactory (3.0.17)
    atomos (0.1.3)
-    aws-eventstream (1.3.2)
-    aws-partitions (1.1109.0)
-    aws-sdk-core (3.224.1)
+    aws-eventstream (1.4.0)
+    aws-partitions (1.1274.0)
+    aws-sdk-core (3.254.0)
      aws-eventstream (~> 1, >= 1.3.0)
      aws-partitions (~> 1, >= 1.992.0)
      aws-sigv4 (~> 1.9)
      base64
+      bigdecimal
      jmespath (~> 1, >= 1.6.1)
      logger
-    aws-sdk-kms (1.101.0)
-      aws-sdk-core (~> 3, >= 3.216.0)
+    aws-sdk-kms (1.130.0)
+      aws-sdk-core (~> 3, >= 3.254.0)
      aws-sigv4 (~> 1.5)
-    aws-sdk-s3 (1.188.0)
-      aws-sdk-core (~> 3, >= 3.224.1)
+    aws-sdk-s3 (1.228.1)
+      aws-sdk-core (~> 3, >= 3.254.0)
      aws-sdk-kms (~> 1)
      aws-sigv4 (~> 1.5)
-    aws-sigv4 (1.11.0)
+    aws-sigv4 (1.12.1)
      aws-eventstream (~> 1, >= 1.0.2)
    babosa (1.0.4)
-    base64 (0.2.0)
+    base64 (0.3.0)
+    benchmark (0.5.0)
+    bigdecimal (4.1.2)
    claide (1.1.0)
    colored (1.2)
    colored2 (3.1.2)
    commander (4.6.0)
      highline (~> 2.0.0)
-    csv (3.3.5)
+    csv (3.3.6)
    declarative (0.0.20)
    digest-crc (0.7.0)
      rake (>= 12.0.0, < 14.0.0)
-    domain_name (0.5.20190701)
-      unf (>= 0.0.5, < 1.0.0)
+    domain_name (0.6.20240107)
    dotenv (2.8.1)
    emoji_regex (3.2.3)
-    excon (0.109.0)
+    excon (1.6.0)
+      logger
    faraday (1.10.6)
      faraday-em_http (~> 1.0)
      faraday-em_synchrony (~> 1.0)
@@ -70,42 +73,45 @@ GEM
    faraday_middleware (1.2.1)
      faraday (~> 1.0)
    fastimage (2.4.1)
-    fastlane (2.230.0)
-      CFPropertyList (>= 2.3, < 4.0.0)
-      abbrev (~> 0.1.2)
-      addressable (>= 2.8, < 3.0.0)
+    fastlane (2.237.0)
+      CFPropertyList (>= 2.3, < 5.0.0)
+      abbrev (~> 0.1)
+      addressable (>= 2.9.0, < 3.0.0)
      artifactory (~> 3.0)
-      aws-sdk-s3 (~> 1.0)
+      aws-sdk-s3 (~> 1.197)
      babosa (>= 1.0.3, < 2.0.0)
-      base64 (~> 0.2.0)
-      bundler (>= 1.12.0, < 3.0.0)
+      base64 (~> 0.2)
+      benchmark (>= 0.1.0)
+      bundler (>= 2.4.0, < 5.0.0)
      colored (~> 1.2)
      commander (~> 4.6)
      csv (~> 3.3)
      dotenv (>= 2.1.1, < 3.0.0)
      emoji_regex (>= 0.1, < 4.0)
-      excon (>= 0.71.0, < 1.0.0)
+      excon (>= 0.71.0, < 2.0.0)
      faraday (~> 1.0)
      faraday-cookie_jar (~> 0.0.6)
      faraday_middleware (~> 1.0)
      fastimage (>= 2.1.0, < 3.0.0)
-      fastlane-sirp (>= 1.0.0)
+      fastlane-sirp (>= 1.1.0)
      gh_inspector (>= 1.1.2, < 2.0.0)
      google-apis-androidpublisher_v3 (~> 0.3)
      google-apis-playcustomapp_v1 (~> 0.1)
-      google-cloud-env (>= 1.6.0, < 2.0.0)
+      google-cloud-env (>= 1.6.0, < 2.3.0)
      google-cloud-storage (~> 1.31)
      highline (~> 2.0)
      http-cookie (~> 1.0.5)
      json (< 3.0.0)
-      jwt (>= 2.1.0, < 3)
+      jwt (>= 2.10.3, < 4)
      logger (>= 1.6, < 2.0)
      mini_magick (>= 4.9.4, < 5.0.0)
+      multi_json (~> 1.12)
      multipart-post (>= 2.0.0, < 3.0.0)
-      mutex_m (~> 0.3.0)
+      mutex_m (~> 0.3)
      naturally (~> 2.2)
-      nkf (~> 0.2.0)
+      nkf (~> 0.2)
      optparse (>= 0.1.1, < 1.0.0)
+      ostruct (>= 0.1.0)
      plist (>= 3.1.0, < 4.0.0)
      rubyzip (>= 2.0.0, < 3.0.0)
      security (= 0.1.5)
@@ -120,41 +126,46 @@ GEM
      xcpretty-travis-formatter (>= 0.0.3, < 2.0.0)
    fastlane-sirp (1.1.0)
    gh_inspector (1.1.3)
-    google-apis-androidpublisher_v3 (0.54.0)
-      google-apis-core (>= 0.11.0, < 2.a)
-    google-apis-core (0.11.3)
+    google-apis-androidpublisher_v3 (0.106.0)
+      google-apis-core (>= 0.15.0, < 2.a)
+    google-apis-core (0.18.0)
      addressable (~> 2.5, >= 2.5.1)
-      googleauth (>= 0.16.2, < 2.a)
-      httpclient (>= 2.8.1, < 3.a)
+      googleauth (~> 1.9)
+      httpclient (>= 2.8.3, < 3.a)
      mini_mime (~> 1.0)
+      mutex_m
      representable (~> 3.0)
      retriable (>= 2.0, < 4.a)
-      rexml
-    google-apis-iamcredentials_v1 (0.17.0)
-      google-apis-core (>= 0.11.0, < 2.a)
-    google-apis-playcustomapp_v1 (0.13.0)
-      google-apis-core (>= 0.11.0, < 2.a)
-    google-apis-storage_v1 (0.29.0)
-      google-apis-core (>= 0.11.0, < 2.a)
-    google-cloud-core (1.6.1)
+    google-apis-iamcredentials_v1 (0.28.0)
+      google-apis-core (>= 0.15.0, < 2.a)
+    google-apis-playcustomapp_v1 (0.18.0)
+      google-apis-core (>= 0.15.0, < 2.a)
+    google-apis-storage_v1 (0.65.0)
+      google-apis-core (>= 0.15.0, < 2.a)
+    google-cloud-core (1.9.0)
      google-cloud-env (>= 1.0, < 3.a)
      google-cloud-errors (~> 1.0)
-    google-cloud-env (1.6.0)
-      faraday (>= 0.17.3, < 3.0)
-    google-cloud-errors (1.3.1)
-    google-cloud-storage (1.45.0)
+    google-cloud-env (2.2.2)
+      base64 (~> 0.2)
+      faraday (>= 1.0, < 3.a)
+    google-cloud-errors (1.7.0)
+    google-cloud-storage (1.62.0)
      addressable (~> 2.8)
      digest-crc (~> 0.4)
-      google-apis-iamcredentials_v1 (~> 0.1)
-      google-apis-storage_v1 (~> 0.29.0)
+      google-apis-core (>= 0.18, < 2)
+      google-apis-iamcredentials_v1 (~> 0.18)
+      google-apis-storage_v1 (>= 0.42)
      google-cloud-core (~> 1.6)
-      googleauth (>= 0.16.2, < 2.a)
+      googleauth (~> 1.9)
      mini_mime (~> 1.0)
-    googleauth (1.8.1)
-      faraday (>= 0.17.3, < 3.a)
-      jwt (>= 1.4, < 3.0)
-      multi_json (~> 1.11)
+    google-logging-utils (0.2.0)
+    googleauth (1.17.2)
+      faraday (>= 1.0, < 3.a)
+      google-cloud-env (~> 2.2)
+      google-logging-utils (~> 0.1)
+      jwt (>= 1.4, < 4.0)
      os (>= 0.9, < 2.0)
+      pstore (~> 0.1)
      signet (>= 0.16, < 2.a)
    highline (2.0.3)
    http-cookie (1.0.8)
@@ -162,22 +173,24 @@ GEM
    httpclient (2.9.0)
      mutex_m
    jmespath (1.6.2)
-    json (2.7.6)
-    jwt (2.10.3)
+    json (2.21.1)
+    jwt (3.2.0)
      base64
    logger (1.7.0)
    mini_magick (4.13.2)
    mini_mime (1.1.5)
-    multi_json (1.15.0)
+    multi_json (1.21.1)
    multipart-post (2.4.1)
    mutex_m (0.3.0)
    nanaimo (0.4.0)
    naturally (2.3.0)
-    nkf (0.2.0)
+    nkf (0.3.0)
    optparse (0.8.1)
    os (1.1.4)
+    ostruct (0.6.3)
    plist (3.7.2)
-    public_suffix (5.1.1)
+    pstore (0.2.1)
+    public_suffix (7.0.5)
    rake (13.4.2)
    representable (3.2.0)
      declarative (< 0.1.0)
@@ -189,11 +202,10 @@ GEM
    ruby2_keywords (0.0.5)
    rubyzip (2.4.1)
    security (0.1.5)
-    signet (0.18.0)
+    signet (0.22.0)
      addressable (~> 2.8)
      faraday (>= 0.17.5, < 3.a)
-      jwt (>= 1.5, < 3.0)
-      multi_json (~> 1.10)
+      jwt (>= 1.5, < 4.0)
    simctl (1.6.10)
      CFPropertyList
      naturally
@@ -206,15 +218,16 @@ GEM
    tty-spinner (0.9.3)
      tty-cursor (~> 0.7)
    uber (0.1.0)
-    unf (0.2.0)
    unicode-display_width (2.6.0)
    word_wrap (1.0.0)
-    xcodeproj (1.27.0)
+    xcodeproj (1.28.1)
      CFPropertyList (>= 2.3.3, < 4.0)
      atomos (~> 0.1.3)
+      base64
      claide (>= 1.0.2, < 2.0)
      colored2 (~> 3.1)
      nanaimo (~> 0.4.0)
+      nkf
      rexml (>= 3.3.6, < 4.0)
    xcpretty (0.4.1)
      rouge (~> 3.28.0)
@@ -225,7 +238,7 @@ PLATFORMS
  ruby

 DEPENDENCIES
-  fastlane
+  fastlane (= 2.237.0)

 BUNDLED WITH
   2.5.23
--- a/ios/fastlane/Appfile
+++ b/ios/fastlane/Appfile
@@ -0,0 +1,2 @@
+app_identifier("net.buzzert.sybil2")
+team_id("DQQH5H6GBD")
--- a/ios/fastlane/Fastfile
+++ b/ios/fastlane/Fastfile
@@ -1,164 +1,47 @@
-require "shellwords"
-
 default_platform(:ios)

-APP_IDENTIFIER = "net.buzzert.sybil2"
-SCHEME = "Sybil"
-TEAM_ID = "DQQH5H6GBD"
-PROFILE_NAME = "Sybil AppStore CI"
-CI_KEYCHAIN_NAME = "sybil_ci_keychain"
-CI_KEYCHAIN_PASSWORD = "sybil-ci-keychain-password"
-CI_KEYCHAIN_DB_PATH = File.expand_path("~/Library/Keychains/#{CI_KEYCHAIN_NAME}-db")
-IOS_ROOT = File.expand_path("..", __dir__)
-PROJECT_FILE = File.join(IOS_ROOT, "Sybil.xcodeproj")
-PROJECT_SPEC = File.join(IOS_ROOT, "project.yml")
-APP_PROJECT_SPEC = File.join(IOS_ROOT, "Apps/Sybil/project.yml")
-
-def present?(value)
-  !value.to_s.strip.empty?
-end
-
-def ci?
-  present?(ENV["CI"])
-end
-
-def release_version
-  tag = ENV["SYBIL_VERSION_TAG"]
-  tag = ENV["GITHUB_REF_NAME"] if !present?(tag)
-  tag = ENV["GITHUB_REF"].to_s.sub(%r{\Arefs/tags/}, "") if !present?(tag)
-  tag = sh("git describe --tags --abbrev=0").strip if !present?(tag)
-  match = tag.to_s.match(%r{\Arelease/ios/v(\d+\.\d+\.\d+)\z})
-
-  unless match
-    UI.user_error!("Release tag must look like release/ios/v1.2.3; got #{tag.inspect}")
-  end
-
-  match[1]
-end
-
-# App Store Connect requires CFBundleVersion to be unique and strictly
-# increasing app-wide (not just per marketing version), so we derive it from
-# the monotonic CI run number rather than querying TestFlight (that query can
-# lag behind builds still processing and hand back a colliding value).
-def build_number
-  value = present?(ENV["SYBIL_BUILD_NUMBER"]) ? ENV["SYBIL_BUILD_NUMBER"] : ENV["GITHUB_RUN_NUMBER"]
-
-  unless value.to_s.match?(/\A\d+\z/)
-    UI.user_error!("Build number must come from SYBIL_BUILD_NUMBER/GITHUB_RUN_NUMBER; got #{value.inspect}")
-  end
-
-  value.to_i
-end
-
-def stamp_marketing_version(version)
-  contents = File.read(APP_PROJECT_SPEC)
-  updated = contents.sub(/^(\s*MARKETING_VERSION:\s*).*/, "\\1\"#{version}\"")
-
-  if updated == contents
-    UI.user_error!("Could not find MARKETING_VERSION in #{APP_PROJECT_SPEC}")
-  end
-
-  File.write(APP_PROJECT_SPEC, updated)
-end
-
 platform :ios do
-  private_lane :app_store_api_key do
-    app_store_connect_api_key(
-      key_id: ENV.fetch("APP_STORE_CONNECT_KEY_ID"),
-      issuer_id: ENV.fetch("APP_STORE_CONNECT_ISSUER_ID"),
-      key_content: ENV.fetch("APP_STORE_CONNECT_KEY_CONTENT"),
+  desc "Build a release tag and upload it to TestFlight"
+  lane :beta do
+    setup_ci
+
+    match(type: "appstore")
+
+    tag = ENV.fetch("GITHUB_REF_NAME")
+    version = tag[%r{\Arelease/ios/v(\d+\.\d+\.\d+)\z}, 1]
+    UI.user_error!("Expected a tag in the form release/ios/vX.Y.Z; got #{tag.inspect}") unless version
+
+    build_number = ENV.fetch("GITHUB_RUN_NUMBER")
+    UI.user_error!("GITHUB_RUN_NUMBER must be a positive integer") unless build_number.match?(/\A[1-9]\d*\z/)
+
+    ios_dir = File.expand_path("..", __dir__)
+    project_spec = File.join(ios_dir, "Apps/Sybil/project.yml")
+    contents = File.read(project_spec)
+    unless contents.match?(/^\s*MARKETING_VERSION:/) && contents.match?(/^\s*CURRENT_PROJECT_VERSION:/)
+      UI.user_error!("Could not find version settings in #{project_spec}")
+    end
+    contents.sub!(/^(\s*MARKETING_VERSION:\s*).*/, "\\1\"#{version}\"")
+    contents.sub!(/^(\s*CURRENT_PROJECT_VERSION:\s*).*/, "\\1#{build_number}")
+    File.write(project_spec, contents)
+
+    sh("xcodegen", "--spec", File.join(ios_dir, "project.yml"))
+
+    api_key = app_store_connect_api_key(
+      key_id: ENV.fetch("ASC_KEY_ID"),
+      issuer_id: ENV.fetch("ASC_ISSUER_ID"),
+      key_content: ENV.fetch("ASC_KEY"),
      is_key_content_base64: true
    )
-  end
-
-  # CI signs headlessly, so match needs a fresh unlocked keychain to import
-  # into. codesign resolves identities through the user keychain *search list*
-  # (first match wins; the --keychain flag does not restrict the lookup), and
-  # other projects' keychains on this runner hold the same identity but are
-  # usually locked — so ours must come first. delete_keychain in the beta
-  # lane's ensure removes both the keychain and its search-list entry, which
-  # also keeps our (later locked) copy from shadowing those other projects.
-  private_lane :prepare_ci_keychain do
-    next unless ci?
-
-    delete_keychain(name: CI_KEYCHAIN_NAME) if File.file?(CI_KEYCHAIN_DB_PATH)
-    create_keychain(
-      name: CI_KEYCHAIN_NAME,
-      password: CI_KEYCHAIN_PASSWORD,
-      unlock: true,
-      timeout: 3600,
-      add_to_search_list: false
-    )
-
-    others = sh("security list-keychains -d user", log: false)
-      .scan(/"([^"]+)"/)
-      .flatten
-      .reject { |path| path.include?(CI_KEYCHAIN_NAME) }
-    sh("security list-keychains -d user -s #{([CI_KEYCHAIN_DB_PATH] + others).shelljoin}")
-
-    ENV["MATCH_KEYCHAIN_NAME"] = CI_KEYCHAIN_NAME
-    ENV["MATCH_KEYCHAIN_PASSWORD"] = CI_KEYCHAIN_PASSWORD
-  end
-
-  private_lane :sync_signing do |options|
-    match(
-      type: "appstore",
-      readonly: options.fetch(:readonly),
-      app_identifier: APP_IDENTIFIER,
-      team_id: TEAM_ID,
-      profile_name: PROFILE_NAME,
-      git_url: ENV.fetch("MATCH_GIT_URL"),
-      git_branch: "master",
-      git_full_name: "Sybil Release Bot",
-      git_user_email: "james.magahern@me.com",
-      api_key: options.fetch(:api_key)
-    )
-  end
-
-  desc "Create or update match signing assets"
-  lane :setup_signing do
-    sync_signing(api_key: app_store_api_key, readonly: false)
-  end
-
-  desc "Build and upload to TestFlight"
-  lane :beta do
-    prepare_ci_keychain
-
-    api_key = app_store_api_key
-
-    version = release_version
-    stamp_marketing_version(version)
-    sh("xcodegen", "--spec", PROJECT_SPEC)
-
-    increment_version_number(version_number: version, xcodeproj: PROJECT_FILE)
-    increment_build_number(build_number: build_number, xcodeproj: PROJECT_FILE)
-
-    sync_signing(api_key: api_key, readonly: true)

    build_app(
-      project: PROJECT_FILE,
-      scheme: SCHEME,
-      export_method: "app-store",
-      xcargs: [
-        "DEVELOPMENT_TEAM=#{TEAM_ID.shellescape}",
-        "CODE_SIGN_STYLE=Manual",
-        "CODE_SIGN_IDENTITY=Apple\\ Distribution",
-        "PROVISIONING_PROFILE_SPECIFIER=#{PROFILE_NAME.shellescape}"
-      ].join(" "),
-      export_options: {
-        signingStyle: "manual",
-        teamID: TEAM_ID,
-        provisioningProfiles: {
-          APP_IDENTIFIER => PROFILE_NAME
-        }
-      }
+      project: File.join(ios_dir, "Sybil.xcodeproj"),
+      scheme: "Sybil"
    )

    upload_to_testflight(
      api_key: api_key,
-      skip_waiting_for_build_processing: true
+      skip_waiting_for_build_processing: true,
+      uses_non_exempt_encryption: false
    )
-  ensure
-    delete_keychain(name: CI_KEYCHAIN_NAME) if ci? && File.file?(CI_KEYCHAIN_DB_PATH)
  end
 end
--- a/ios/fastlane/Matchfile
+++ b/ios/fastlane/Matchfile
@@ -0,0 +1,7 @@
+git_url("https://code.buzzert.dev/buzzert/fastlane-match.git")
+storage_mode("git")
+type("appstore")
+
+app_identifier(["net.buzzert.sybil2"])
+team_id("DQQH5H6GBD")
+profile_name("Sybil AppStore CI")
--- a/web/package.json
+++ b/web/package.json
@@ -7,6 +7,7 @@
    "dev": "vite",
    "build": "tsc -b && vite build",
    "preview": "vite preview",
+    "test": "node --test --experimental-strip-types tests/*.test.mjs",
    "typecheck": "tsc --noEmit"
  },
  "dependencies": {
--- a/web/src/App.tsx
+++ b/web/src/App.tsx
@@ -7,7 +7,6 @@ import {
  LoaderCircle,
  Menu,
  MessageSquare,
-  Paperclip,
  Pencil,
  Plus,
  Rabbit,
@@ -23,6 +22,7 @@ import { Textarea } from "@/components/ui/textarea";
 import { Separator } from "@/components/ui/separator";
 import { AuthScreen } from "@/components/auth/auth-screen";
 import { ChatAttachmentList } from "@/components/chat/chat-attachment-list";
+import { ChatComposer } from "@/components/chat/chat-composer";
 import { ChatMessagesPanel } from "@/components/chat/chat-messages-panel";
 import { SearchResultsPanel } from "@/components/search/search-results-panel";
 import { SybilCharacter } from "@/components/sybil-character";
@@ -63,9 +63,16 @@ import {
  type WorkspaceItem,
 } from "@/lib/api";
 import { useSessionAuth } from "@/hooks/use-session-auth";
+import {
+  getChatModelSelection,
+  getChatModelSelectionSyncKey,
+} from "@/lib/chat-model-selection";
+import {
+  resolveSidebarSelectionAfterRefresh,
+  type SidebarSelection,
+} from "@/lib/sidebar-selection";
 import { cn } from "@/lib/utils";

-type SidebarSelection = { kind: "chat" | "search"; id: string };
 type DraftSelectionKind = "chat" | "search";
 type SidebarItem = SidebarSelection & {
  title: string;
@@ -94,7 +101,7 @@ type ActiveRunsState = {
  searches: Record<string, true>;
 };
 type RefreshCollectionsOptions = {
-  preferredSelection?: SidebarSelection;
+  initialSelection?: SidebarSelection;
  reportTransientError?: boolean;
  selectFallback?: boolean;
 };
@@ -542,14 +549,6 @@ function normalizeEnabledTools(value: unknown, availableTools: ChatToolInfo[]) {
  );
 }

-function getChatModelSelection(chat: Pick<ChatSummary, "lastUsedProvider" | "lastUsedModel"> | Pick<ChatDetail, "lastUsedProvider" | "lastUsedModel"> | null) {
-  if (!chat?.lastUsedProvider || !chat.lastUsedModel?.trim()) return null;
-  return {
-    provider: chat.lastUsedProvider,
-    model: chat.lastUsedModel.trim(),
-  };
-}
-
 type ToolLogMetadata = {
  kind: "tool_call";
  toolCallId?: string;
@@ -926,7 +925,7 @@ export default function App() {
  const [pendingChatStates, setPendingChatStates] = useState<Record<string, PendingChatState>>({});
  const [runningSearchStates, setRunningSearchStates] = useState<Record<string, SearchDetail>>({});
  const [activeRuns, setActiveRuns] = useState<ActiveRunsState>(EMPTY_ACTIVE_RUNS);
-  const [composer, setComposer] = useState("");
+  const [composerDraftRevision, setComposerDraftRevision] = useState(0);
  const [pendingAttachments, setPendingAttachments] = useState<ChatAttachment[]>([]);
  const [isComposerDropActive, setIsComposerDropActive] = useState(false);
  const [provider, setProvider] = useState<Provider>("openai");
@@ -978,6 +977,7 @@ export default function App() {
  const fileInputRef = useRef<HTMLInputElement>(null);
  const dragDepthRef = useRef(0);
  const pendingAttachmentsRef = useRef<ChatAttachment[]>([]);
+  const composerDraftRef = useRef("");
  const selectedItemRef = useRef<SidebarSelection | null>(null);
  const pendingTitleGenerationRef = useRef<Set<string>>(new Set());
  const chatStreamAbortRefs = useRef<Map<string, AbortController>>(new Map());
@@ -1051,13 +1051,10 @@ export default function App() {
    });
  };

-  useEffect(() => {
-    if (typeof document === "undefined") return;
-    const textarea = document.getElementById("composer-input") as HTMLTextAreaElement | null;
-    if (!textarea) return;
-    textarea.style.height = "0px";
-    textarea.style.height = `${textarea.scrollHeight}px`;
-  }, [composer]);
+  const replaceComposerDraft = (value: string) => {
+    composerDraftRef.current = value;
+    setComposerDraftRevision((current) => current + 1);
+  };

  useEffect(() => {
    pendingAttachmentsRef.current = pendingAttachments;
@@ -1097,7 +1094,7 @@ export default function App() {
    }
    searchRunAbortRefs.current.clear();
    searchRunCountersRef.current.clear();
-    setComposer("");
+    replaceComposerDraft("");
    setPendingAttachments([]);
    setIsChatSettingsOpen(false);
    setIsSavingChatSettings(false);
@@ -1131,7 +1128,7 @@ export default function App() {
  };

  const refreshCollections = async ({
-    preferredSelection,
+    initialSelection,
    reportTransientError = true,
    selectFallback = false,
  }: RefreshCollectionsOptions = {}) => {
@@ -1143,24 +1140,12 @@ export default function App() {
      setChats(nextChats);
      setSearches(nextSearches);

-      setSelectedItem((current) => {
-        const hasItem = (candidate: SidebarSelection | null) => {
-          if (!candidate) return false;
-          return nextWorkspaceItems.some((item) => item.type === candidate.kind && item.id === candidate.id);
-        };
-
-        if (preferredSelection && hasItem(preferredSelection)) {
-          return preferredSelection;
-        }
-        if (hasItem(current)) {
-          return current;
-        }
-        if (!selectFallback) {
-          return null;
-        }
-        const first = nextWorkspaceItems[0];
-        return first ? { kind: first.type, id: first.id } : null;
-      });
+      setSelectedItem((current) =>
+        resolveSidebarSelectionAfterRefresh(current, nextWorkspaceItems, {
+          initialSelection,
+          selectFallback,
+        })
+      );
    } catch (err) {
      const message = err instanceof Error ? err.message : String(err);
      if (message.includes("bearer token")) {
@@ -1252,10 +1237,10 @@ export default function App() {

  useEffect(() => {
    if (!isAuthenticated) return;
-    const preferredSelection = initialRouteSelectionRef.current;
+    const initialSelection = initialRouteSelectionRef.current;
    initialRouteSelectionRef.current = null;
    void Promise.all([
-      refreshCollections({ preferredSelection: preferredSelection ?? undefined, selectFallback: true }),
+      refreshCollections({ initialSelection: initialSelection ?? undefined, selectFallback: true }),
      refreshModels(),
      refreshChatTools(),
      refreshActiveRuns(),
@@ -1571,15 +1556,32 @@ export default function App() {
    return searches.find((search) => search.id === selectedItem.id) ?? null;
  }, [searches, selectedItem]);

-  useEffect(() => {
-    if (draftKind || selectedItem?.kind !== "chat") return;
+  const selectedChatModelSelection = useMemo(() => {
+    if (draftKind || selectedItem?.kind !== "chat") return null;
    const detailSelection = selectedChat?.id === selectedItem.id ? getChatModelSelection(selectedChat) : null;
    const summarySelection = getChatModelSelection(selectedChatSummary);
-    const nextSelection = detailSelection ?? summarySelection;
-    if (!nextSelection) return;
-    setProvider(nextSelection.provider);
-    setModel(nextSelection.model);
-  }, [draftKind, selectedChat, selectedChatSummary, selectedItem]);
+    return detailSelection ?? summarySelection;
+  }, [
+    draftKind,
+    selectedChat?.id,
+    selectedChat?.lastUsedModel,
+    selectedChat?.lastUsedProvider,
+    selectedChatSummary?.id,
+    selectedChatSummary?.lastUsedModel,
+    selectedChatSummary?.lastUsedProvider,
+    selectedItem?.id,
+    selectedItem?.kind,
+  ]);
+  const selectedChatModelSelectionSyncKey = getChatModelSelectionSyncKey(
+    selectedItem?.kind === "chat" ? selectedItem.id : null,
+    selectedChatModelSelection
+  );
+
+  useEffect(() => {
+    if (!selectedChatModelSelection) return;
+    setProvider(selectedChatModelSelection.provider);
+    setModel(selectedChatModelSelection.model);
+  }, [selectedChatModelSelectionSyncKey]);

  useEffect(() => {
    if (draftKind === "chat") return;
@@ -2480,7 +2482,7 @@ export default function App() {

        backgroundSuspendedChatStreamsRef.current.delete(chatId);
        const persistedChat = await retryAfterAppResume(() => getChat(chatId));
-        await refreshCollections({ preferredSelection: target, reportTransientError: false });
+        await refreshCollections({ reportTransientError: false });
        if (isCurrentSelection(target)) {
          setSelectedChat(persistedChat);
          setSelectedSearch(null);
@@ -2694,7 +2696,7 @@ export default function App() {
      }
    }

-    await refreshCollections({ preferredSelection: target });
+    await refreshCollections();
    return target;
  };

@@ -2813,7 +2815,7 @@ export default function App() {
                setSelectedChat(persistedChat);
                setSelectedSearch(null);
              }
-              void refreshCollections({ preferredSelection: target });
+              void refreshCollections();
              return;
            } catch (resumeError) {
              err = resumeError;
@@ -2919,7 +2921,7 @@ export default function App() {
        { signal: abortController.signal }
      );

-      await refreshCollections({ preferredSelection: target });
+      await refreshCollections();
      if (isCurrentSelection(target)) {
        await refreshSearch(searchId);
      }
@@ -2963,7 +2965,7 @@ export default function App() {
    try {
      const chat = await createChatFromSearch(sourceSearch.id);
      setDraftKind(null);
-      setComposer("");
+      replaceComposerDraft("");
      setPendingAttachments([]);
      setChats((current) => {
        const withoutExisting = current.filter((existing) => existing.id !== chat.id);
@@ -2987,7 +2989,7 @@ export default function App() {
        messages: [],
      });
      setSelectedSearch(null);
-      await refreshCollections({ preferredSelection: { kind: "chat", id: chat.id } });
+      await refreshCollections();
      await refreshChat(chat.id);
    } catch (err) {
      const message = err instanceof Error ? err.message : String(err);
@@ -3122,7 +3124,7 @@ export default function App() {
      });

      setDraftKind(null);
-      setComposer("");
+      replaceComposerDraft("");
      setPendingAttachments([]);
      setIsQuickQuestionOpen(false);
      setProvider(selection.provider);
@@ -3149,7 +3151,7 @@ export default function App() {
        messages: [],
      });
      setSelectedSearch(null);
-      await refreshCollections({ preferredSelection: { kind: "chat", id: chat.id } });
+      await refreshCollections();
      await refreshChat(chat.id);
    } catch (err) {
      const message = err instanceof Error ? err.message : String(err);
@@ -3163,8 +3165,8 @@ export default function App() {
    }
  };

-  const handleSend = async () => {
-    const content = composer.trim();
+  const handleSend = async (draft: string) => {
+    const content = draft.trim();
    const attachments = pendingAttachments;
    if ((!content && !attachments.length) || isActiveSelectionSending) return;
    if (isSearchMode && attachments.length) {
@@ -3172,7 +3174,7 @@ export default function App() {
      return;
    }

-    setComposer("");
+    replaceComposerDraft("");
    setPendingAttachments([]);
    setError(null);

@@ -3197,7 +3199,7 @@ export default function App() {
      }

      if (!sentAsSearch && (!sentTarget || isCurrentSelection(sentTarget))) {
-        setComposer(content);
+        replaceComposerDraft(content);
        setPendingAttachments(attachments);
      }

@@ -3242,11 +3244,11 @@ export default function App() {

  return (
    <div className="app-grid-surface app-safe-frame h-full">
-      <div className="flex h-full w-full overflow-hidden bg-transparent md:gap-2">
+      <div className="workspace-shell flex h-full w-full overflow-hidden bg-transparent md:gap-2">
        {isMobileSidebarOpen ? (
          <button
            type="button"
-            className="fixed inset-0 z-30 bg-black/70 backdrop-blur-sm md:hidden"
+            className="workspace-sidebar-backdrop fixed inset-0 z-30 bg-black/70 backdrop-blur-sm md:hidden"
            onClick={() => setIsMobileSidebarOpen(false)}
            aria-label="Close sidebar"
          />
@@ -3254,7 +3256,7 @@ export default function App() {

        <aside
          className={cn(
-            "glass-panel fixed inset-y-0 left-0 z-40 flex w-[86vw] max-w-80 shrink-0 flex-col border-r border-violet-300/18 transition-transform md:static md:z-auto md:w-80 md:max-w-none md:rounded-2xl md:border",
+            "workspace-sidebar glass-panel fixed inset-y-0 left-0 z-40 flex w-[86vw] max-w-80 shrink-0 flex-col border-r border-violet-300/18 transition-transform md:static md:z-auto md:w-80 md:max-w-none md:rounded-2xl md:border",
            isMobileSidebarOpen ? "translate-x-0" : "-translate-x-full md:translate-x-0"
          )}
        >
@@ -3397,7 +3399,7 @@ export default function App() {
        </aside>

        <main
-          className="glass-panel relative flex min-w-0 flex-1 touch-pan-y flex-col overflow-hidden border-violet-300/18 md:touch-auto md:rounded-2xl md:border"
+          className="workspace-content glass-panel relative flex min-w-0 flex-1 touch-pan-y flex-col overflow-hidden border-violet-300/18 md:touch-auto md:rounded-2xl md:border"
          onTouchStart={handleMobileWorkspaceTouchStart}
          onTouchMove={handleMobileWorkspaceTouchMove}
          onTouchEnd={handleMobileWorkspaceTouchEnd}
@@ -3409,7 +3411,7 @@ export default function App() {
                type="button"
                size="icon"
                variant="ghost"
-                className="-ml-1 h-8 w-8 md:hidden"
+                className="workspace-sidebar-trigger -ml-1 h-8 w-8 md:hidden"
                onClick={() => setIsMobileSidebarOpen(true)}
                aria-label="Open sidebar"
              >
@@ -3517,52 +3519,22 @@ export default function App() {
                  </div>
                </div>
              ) : null}
-              <Textarea
-                id="composer-input"
-                rows={1}
-                value={composer}
-                onInput={(event) => {
-                  const textarea = event.currentTarget;
-                  textarea.style.height = "0px";
-                  textarea.style.height = `${textarea.scrollHeight}px`;
-                  setComposer(textarea.value);
-                }}
+              <ChatComposer
+                draftRef={composerDraftRef}
+                draftRevision={composerDraftRevision}
+                error={error}
+                isSearchMode={isSearchMode}
+                isSending={isActiveSelectionSending}
+                pendingAttachmentCount={pendingAttachments.length}
+                attachmentButtonDisabled={
+                  isActiveSelectionSending || pendingAttachments.length >= MAX_CHAT_ATTACHMENTS
+                }
+                onOpenAttachmentPicker={handleOpenAttachmentPicker}
                onPaste={(event) => {
                  void handleComposerPaste(event);
                }}
-                onKeyDown={(event) => {
-                  if (event.key === "Enter" && !event.shiftKey) {
-                    event.preventDefault();
-                    void handleSend();
-                  }
-                }}
-                placeholder={isSearchMode ? "Search the web" : "Enter prompt..."}
-                className="max-h-40 min-h-0 resize-none overflow-y-auto border-0 bg-transparent px-3 py-3 text-base text-violet-50 shadow-none placeholder:text-violet-200/45 focus-visible:ring-0"
-                disabled={isActiveSelectionSending}
+                onSend={handleSend}
              />
-              <div className={cn("flex items-center gap-3 px-2 pb-1", error ? "justify-between" : "justify-end")}>
-                {error ? <p className="min-w-0 truncate text-xs text-rose-300">{error}</p> : null}
-                {!isSearchMode ? (
-                  <Button
-                    className="h-10 w-10 rounded-lg"
-                    onClick={handleOpenAttachmentPicker}
-                    size="icon"
-                    variant="secondary"
-                    disabled={isActiveSelectionSending || pendingAttachments.length >= MAX_CHAT_ATTACHMENTS}
-                    aria-label="Attach files"
-                  >
-                    <Paperclip className="h-4 w-4" />
-                  </Button>
-                ) : null}
-                <Button
-                  className="h-10 w-10 rounded-lg"
-                  onClick={() => void handleSend()}
-                  size="icon"
-                  disabled={isActiveSelectionSending || (!composer.trim() && !pendingAttachments.length)}
-                >
-                  {isSearchMode ? <Search className="h-4 w-4" /> : <SendHorizontal className="h-4 w-4" />}
-                </Button>
-              </div>
            </div>
          </footer>
        </main>
--- a/web/src/components/chat/chat-composer.tsx
+++ b/web/src/components/chat/chat-composer.tsx
@@ -0,0 +1,140 @@
+import { useLayoutEffect, useRef, useState } from "preact/hooks";
+import { Paperclip, Search, SendHorizontal } from "lucide-preact";
+import { Button } from "@/components/ui/button";
+import { Textarea } from "@/components/ui/textarea";
+import { cn } from "@/lib/utils";
+
+type MutableValueRef = {
+  current: string;
+};
+
+type Props = {
+  draftRef: MutableValueRef;
+  draftRevision: number;
+  error: string | null;
+  isSearchMode: boolean;
+  isSending: boolean;
+  pendingAttachmentCount: number;
+  attachmentButtonDisabled: boolean;
+  onOpenAttachmentPicker: () => void;
+  onPaste: (event: ClipboardEvent) => void;
+  onSend: (draft: string) => void | Promise<void>;
+};
+
+const MIRROR_SENTINEL = "\u200b";
+const HAS_NON_WHITESPACE = /\S/;
+
+export function ChatComposer({
+  draftRef,
+  draftRevision,
+  error,
+  isSearchMode,
+  isSending,
+  pendingAttachmentCount,
+  attachmentButtonDisabled,
+  onOpenAttachmentPicker,
+  onPaste,
+  onSend,
+}: Props) {
+  // The draft stays in the DOM/ref so typing never schedules a render of the workspace transcript.
+  const textareaContainerRef = useRef<HTMLDivElement>(null);
+  const mirrorRef = useRef<HTMLDivElement>(null);
+  const [hasDraft, setHasDraft] = useState(() => HAS_NON_WHITESPACE.test(draftRef.current));
+  const hasDraftRef = useRef(hasDraft);
+
+  const getTextarea = () => textareaContainerRef.current?.querySelector("textarea") ?? null;
+
+  const updateMirror = (value: string) => {
+    // The overlapping mirror lets normal layout size the textarea without synchronous scrollHeight reads.
+    if (mirrorRef.current) mirrorRef.current.textContent = `${value}${MIRROR_SENTINEL}`;
+  };
+
+  const updateHasDraft = (value: string) => {
+    const nextHasDraft = HAS_NON_WHITESPACE.test(value);
+    if (nextHasDraft !== hasDraftRef.current) {
+      hasDraftRef.current = nextHasDraft;
+      setHasDraft(nextHasDraft);
+    }
+  };
+
+  useLayoutEffect(() => {
+    const value = draftRef.current;
+    const textarea = getTextarea();
+    if (textarea && textarea.value !== value) {
+      textarea.value = value;
+    }
+    updateMirror(value);
+    updateHasDraft(value);
+  }, [draftRevision]);
+
+  const submit = () => {
+    const textarea = getTextarea();
+    const draft = textarea?.value ?? draftRef.current;
+    const canSend = HAS_NON_WHITESPACE.test(draft) || (!isSearchMode && pendingAttachmentCount > 0);
+    if (isSending || !canSend) return;
+
+    draftRef.current = "";
+    if (textarea) textarea.value = "";
+    updateMirror("");
+    updateHasDraft("");
+    void onSend(draft);
+  };
+
+  return (
+    <>
+      <div ref={textareaContainerRef} className="grid max-h-40 min-h-0 overflow-hidden">
+        <div
+          ref={mirrorRef}
+          className="pointer-events-none invisible col-start-1 row-start-1 max-h-40 min-h-0 overflow-x-hidden overflow-y-auto whitespace-pre-wrap break-words px-3 py-3 text-base"
+          aria-hidden="true"
+        />
+        <Textarea
+          id="composer-input"
+          rows={1}
+          onInput={(event) => {
+            const value = event.currentTarget.value;
+            draftRef.current = value;
+            updateMirror(value);
+            updateHasDraft(value);
+          }}
+          onPaste={(event) => {
+            onPaste(event);
+          }}
+          onKeyDown={(event) => {
+            if (event.key === "Enter" && !event.shiftKey && !event.isComposing) {
+              event.preventDefault();
+              submit();
+            }
+          }}
+          placeholder={isSearchMode ? "Search the web" : "Enter prompt..."}
+          className="col-start-1 row-start-1 h-full max-h-40 min-h-0 resize-none overflow-y-auto border-0 bg-transparent px-3 py-3 text-base text-violet-50 shadow-none placeholder:text-violet-200/45 focus-visible:ring-0"
+          disabled={isSending}
+        />
+      </div>
+      <div className={cn("flex items-center gap-3 px-2 pb-1", error ? "justify-between" : "justify-end")}>
+        {error ? <p className="min-w-0 truncate text-xs text-rose-300">{error}</p> : null}
+        {!isSearchMode ? (
+          <Button
+            className="h-10 w-10 rounded-lg"
+            onClick={onOpenAttachmentPicker}
+            size="icon"
+            variant="secondary"
+            disabled={attachmentButtonDisabled}
+            aria-label="Attach files"
+          >
+            <Paperclip className="h-4 w-4" />
+          </Button>
+        ) : null}
+        <Button
+          className="h-10 w-10 rounded-lg"
+          onClick={submit}
+          size="icon"
+          disabled={isSending || (!hasDraft && (isSearchMode || pendingAttachmentCount === 0))}
+          aria-label={isSearchMode ? "Search" : "Send message"}
+        >
+          {isSearchMode ? <Search className="h-4 w-4" /> : <SendHorizontal className="h-4 w-4" />}
+        </Button>
+      </div>
+    </>
+  );
+}
--- a/web/src/index.css
+++ b/web/src/index.css
@@ -131,6 +131,45 @@ textarea {
  }
 }

+@media (horizontal-viewport-segments: 2) {
+  .app-safe-frame {
+    padding:
+      max(0.5rem, var(--safe-area-top))
+      max(0.5rem, var(--safe-area-right))
+      max(0.5rem, var(--safe-area-bottom))
+      max(0.5rem, var(--safe-area-left));
+  }
+
+  .workspace-shell {
+    display: grid;
+    grid-template-columns:
+      calc(env(viewport-segment-width 0 0) - max(0.5rem, var(--safe-area-left)))
+      calc(env(viewport-segment-width 1 0) - max(0.5rem, var(--safe-area-right)));
+    column-gap: calc(env(viewport-segment-left 1 0) - env(viewport-segment-right 0 0));
+  }
+
+  .workspace-sidebar {
+    position: static;
+    width: 100%;
+    max-width: none;
+    transform: none;
+    border-width: 1px;
+    border-radius: 1rem;
+  }
+
+  .workspace-content {
+    min-width: 0;
+    border-width: 1px;
+    border-radius: 1rem;
+    touch-action: auto;
+  }
+
+  .workspace-sidebar-backdrop,
+  .workspace-sidebar-trigger {
+    display: none;
+  }
+}
+
 .glass-panel {
  background:
    linear-gradient(180deg, hsl(243 42% 12% / 0.88), hsl(236 48% 5% / 0.92)),
--- a/web/src/lib/chat-model-selection.ts
+++ b/web/src/lib/chat-model-selection.ts
@@ -0,0 +1,24 @@
+import type { Provider } from "./api";
+
+type PersistedChatModel = {
+  lastUsedProvider: Provider | null;
+  lastUsedModel: string | null;
+};
+
+export type ChatModelSelection = {
+  provider: Provider;
+  model: string;
+};
+
+export function getChatModelSelection(chat: PersistedChatModel | null): ChatModelSelection | null {
+  if (!chat?.lastUsedProvider || !chat.lastUsedModel?.trim()) return null;
+  return {
+    provider: chat.lastUsedProvider,
+    model: chat.lastUsedModel.trim(),
+  };
+}
+
+export function getChatModelSelectionSyncKey(chatId: string | null, selection: ChatModelSelection | null) {
+  if (!chatId || !selection) return null;
+  return JSON.stringify([chatId, selection.provider, selection.model]);
+}
--- a/web/src/lib/sidebar-selection.ts
+++ b/web/src/lib/sidebar-selection.ts
@@ -0,0 +1,31 @@
+export type SidebarSelection = { kind: "chat" | "search"; id: string };
+
+type WorkspaceSelectionItem = { type: SidebarSelection["kind"]; id: string };
+
+type ResolveSidebarSelectionOptions = {
+  initialSelection?: SidebarSelection;
+  selectFallback?: boolean;
+};
+
+export function resolveSidebarSelectionAfterRefresh(
+  current: SidebarSelection | null,
+  workspaceItems: WorkspaceSelectionItem[],
+  { initialSelection, selectFallback = false }: ResolveSidebarSelectionOptions = {}
+): SidebarSelection | null {
+  const hasItem = (candidate: SidebarSelection | null | undefined) => {
+    if (!candidate) return false;
+    return workspaceItems.some((item) => item.type === candidate.kind && item.id === candidate.id);
+  };
+
+  if (hasItem(current)) {
+    return current;
+  }
+  if (hasItem(initialSelection)) {
+    return initialSelection ?? null;
+  }
+  if (!selectFallback) {
+    return null;
+  }
+  const first = workspaceItems[0];
+  return first ? { kind: first.type, id: first.id } : null;
+}
--- a/web/tests/chat-model-selection.test.mjs
+++ b/web/tests/chat-model-selection.test.mjs
@@ -0,0 +1,49 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import {
+  getChatModelSelection,
+  getChatModelSelectionSyncKey,
+} from "../src/lib/chat-model-selection.ts";
+
+test("chat model selections are normalized from persisted metadata", () => {
+  assert.deepEqual(
+    getChatModelSelection({
+      lastUsedProvider: "anthropic",
+      lastUsedModel: "  claude-sonnet-4-5  ",
+    }),
+    {
+      provider: "anthropic",
+      model: "claude-sonnet-4-5",
+    }
+  );
+});
+
+test("unrelated chat updates do not change the model synchronization key", () => {
+  const beforeSettingsSave = getChatModelSelection({
+    lastUsedProvider: "openai",
+    lastUsedModel: "gpt-4.1-mini",
+  });
+  const afterSettingsSave = getChatModelSelection({
+    lastUsedProvider: "openai",
+    lastUsedModel: "gpt-4.1-mini",
+  });
+
+  assert.equal(
+    getChatModelSelectionSyncKey("chat-1", beforeSettingsSave),
+    getChatModelSelectionSyncKey("chat-1", afterSettingsSave)
+  );
+});
+
+test("switching chats or persisted models changes the synchronization key", () => {
+  const original = { provider: "openai", model: "gpt-4.1-mini" };
+  const updated = { provider: "gemini", model: "gemini-3.5-flash" };
+
+  assert.notEqual(
+    getChatModelSelectionSyncKey("chat-1", original),
+    getChatModelSelectionSyncKey("chat-2", original)
+  );
+  assert.notEqual(
+    getChatModelSelectionSyncKey("chat-1", original),
+    getChatModelSelectionSyncKey("chat-1", updated)
+  );
+});
--- a/web/tests/sidebar-selection.test.mjs
+++ b/web/tests/sidebar-selection.test.mjs
@@ -0,0 +1,45 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { resolveSidebarSelectionAfterRefresh } from "../src/lib/sidebar-selection.ts";
+
+const workspaceItems = [
+  { type: "chat", id: "completed-chat" },
+  { type: "chat", id: "selected-chat" },
+  { type: "search", id: "selected-search" },
+];
+
+test("a collection refresh preserves the current thread selection", () => {
+  assert.deepEqual(
+    resolveSidebarSelectionAfterRefresh({ kind: "chat", id: "selected-chat" }, workspaceItems),
+    { kind: "chat", id: "selected-chat" }
+  );
+});
+
+test("an initial route selection cannot override a current thread selection", () => {
+  assert.deepEqual(
+    resolveSidebarSelectionAfterRefresh(
+      { kind: "search", id: "selected-search" },
+      workspaceItems,
+      { initialSelection: { kind: "chat", id: "completed-chat" }, selectFallback: true }
+    ),
+    { kind: "search", id: "selected-search" }
+  );
+});
+
+test("a collection refresh preserves an intentionally empty selection", () => {
+  assert.equal(resolveSidebarSelectionAfterRefresh(null, workspaceItems), null);
+});
+
+test("initial load can select the URL thread or fall back to the first item", () => {
+  assert.deepEqual(
+    resolveSidebarSelectionAfterRefresh(null, workspaceItems, {
+      initialSelection: { kind: "search", id: "selected-search" },
+      selectFallback: true,
+    }),
+    { kind: "search", id: "selected-search" }
+  );
+  assert.deepEqual(resolveSidebarSelectionAfterRefresh(null, workspaceItems, { selectFallback: true }), {
+    kind: "chat",
+    id: "completed-chat",
+  });
+});
--- a/web/tsconfig.tsbuildinfo
+++ b/web/tsconfig.tsbuildinfo
@@ -1 +1 @@
-{"root":["./src/App.tsx","./src/main.tsx","./src/pwa.ts","./src/root-router.tsx","./src/vite-env.d.ts","./src/components/sybil-character.tsx","./src/components/auth/auth-screen.tsx","./src/components/chat/chat-attachment-list.tsx","./src/components/chat/chat-messages-panel.tsx","./src/components/markdown/markdown-content.tsx","./src/components/search/search-results-panel.tsx","./src/components/ui/button.tsx","./src/components/ui/input.tsx","./src/components/ui/scroll-area.tsx","./src/components/ui/separator.tsx","./src/components/ui/textarea.tsx","./src/hooks/use-session-auth.ts","./src/lib/api.ts","./src/lib/utils.ts","./src/pages/search-route-page.tsx"],"version":"5.9.3"}
+{"root":["./src/App.tsx","./src/main.tsx","./src/pwa.ts","./src/root-router.tsx","./src/vite-env.d.ts","./src/components/sybil-character.tsx","./src/components/auth/auth-screen.tsx","./src/components/chat/chat-attachment-list.tsx","./src/components/chat/chat-composer.tsx","./src/components/chat/chat-messages-panel.tsx","./src/components/markdown/markdown-content.tsx","./src/components/search/search-results-panel.tsx","./src/components/ui/button.tsx","./src/components/ui/input.tsx","./src/components/ui/scroll-area.tsx","./src/components/ui/separator.tsx","./src/components/ui/textarea.tsx","./src/hooks/use-session-auth.ts","./src/lib/api.ts","./src/lib/chat-model-selection.ts","./src/lib/sidebar-selection.ts","./src/lib/utils.ts","./src/pages/search-route-page.tsx"],"version":"5.9.3"}
Author	SHA1	Message	Date
James Magahern	42022bf055	Improve chat composer typing performance	2026-08-13 00:08:15 -07:00
James Magahern	1ef491f39a	Add foldable split-pane layout	2026-08-06 23:28:42 -07:00
James Magahern	b540f01759	Fix Sybil release paths All checks were successful TestFlight / Build and upload (push) Successful in 1m50s Details	2026-07-27 17:36:31 -07:00
James Magahern	e719cbb92d	Simplify iOS TestFlight automation Some checks failed TestFlight / Build and upload (push) Failing after 18s Details	2026-07-27 17:29:47 -07:00
James Magahern	cb5a973ac7	Preserve provider changes before sending	2026-07-26 17:44:45 -07:00
James Magahern	e2443162b0	Preserve thread selection during background updates	2026-07-26 17:37:39 -07:00