PR #25439 / git.cafe #25440 verification
head db28858c9dc746ee0e366fb51b9a2db1cd5b0a23

CLI commands used real published release downloads, checksums and executable validation.
Source CLI was run with T3CODE_NPM_LAUNCHER_PATH pointing at a real npm-installed matching-version package. No fake release or fake executable.

=== main 32ecd71726: node apps/server/src/bin.ts update 0.1.2 --allow-downgrade --base-dir /tmp/main-update-home --yes; then npm t3 --version ===
  Checking for updates...
  Updating T3 Code 0.1.5 → 0.1.2

  Downloading...
  Verifying the download...
  Extracting T3 Code...
  Checking the new executable...
  Installed T3 Code 0.1.2

  Run /tmp/main-update-home/runtime/versions/0.1.2/t3

t3 v0.1.5

=== PR: node apps/server/src/bin.ts update 0.1.5 --base-dir /tmp/pr-update-home --yes (npm global launcher context) ===
  Checking for updates...
  Updating T3 Code 0.1.2 → 0.1.5

  Downloading...
  Verifying the download...
  Extracting T3 Code...
  Checking the new executable...
  Installed T3 Code 0.1.5

  The t3 npm package still runs 0.1.2. Run `npm install --global --prefix /tmp/pr-npm t3@0.1.5` to move to 0.1.5.


=== npm launcher --version; printed npm install command; npm launcher --version ===
t3 v0.1.2

changed 1 package in 610ms
t3 v0.1.5

=== PR: same update with actual npx cache launcher context ===
  Checking for updates...
  Switching T3 Code 0.1.2 → 0.1.5

  Using the downloaded release...
  Installed T3 Code 0.1.5

  The t3 npm package still runs 0.1.2. Run `npx t3@0.1.5` to move to 0.1.5.


=== printed npx t3@0.1.5 --version ===
t3 v0.1.5

=== PR: standalone source invocation, npm context unset ===
  Checking for updates...
  Switching T3 Code 0.1.2 → 0.1.5

  Using the downloaded release...
  Installed T3 Code 0.1.5

  Run /tmp/pr-update-home/runtime/versions/0.1.5/t3


=== PR: same-version update 0.1.2 ===
  Checking for updates...
t3 is already on 0.1.2 (stable).

Blacksmith: vp test run apps/server/src/cli/update.test.ts apps/server/src/cli/invocation.test.ts apps/server/src/environment/ServerEnvironment.test.ts
3 files passed, 18 tests passed.

Real web client: project added using /home/user/t3code. Codex gpt-6.1-sol read package.json and git branch, completed. Follow-up completed with requested response. No file changes.