feat(templates): support strands ts

[Hweinstock]

Problem

The CLI is missing support for TS.

Solution

• add strands TS template from upstream main https://github.com/aws/agentcore-cli/tree/main/src/assets/typescript/http/strands as is to establish parity.
• add in TS support to dev.
• handle .ts --> .js conversion for dev/deploy.
• container support will be a follow-up.

Testing

> agentcore project create --name hello --template strands-ts Creating project tree
Installing CDK dependencies with npm
Installing Node dependencies with npm
Initializing git repository
Created project 'hello' in ./hello
> agentcore project dev --mode headless --agent strands_agent
OTEL collector listening on port 43911; traces persist to [..]
[strands_agent] Starting development server
[strands_agent] (node:3374940) [FSTDEP023] FastifyDeprecation: disableRequestLogging option is deprecated. Use the logController option with disableRequestLogging or isLogDisabled over
ride instead. The disableRequestLogging top-level option will be removed in `fastify@6`.
[strands_agent] (Use `node --trace-warnings ...` to show where the warning was created)
[strands_agent] {"level":30,"time":1787947133429,"pid":3374940,"hostname":"dev-dsk-hkobew-1d
-51fde466.us-east-1.amazon.com","msg":"Server listening at http://169.254.253.253:8080"}
[strands_agent] {"level":30,"time":1787947133429,"pid":3374940,"hostname":"dev-dsk-hkobew-1d
-51fde466.us-east-1.amazon.com","msg":"Server listening at http://127.0.0.1:8080"}
[strands_agent] {"level":30,"time":1787947133429,"pid":3374940,"hostname":"dev-dsk-hkobew-1d
-51fde466.us-east-1.amazon.com","msg":"Server listening at http://10.39.201.239:8080"}
[strands_agent] {"level":30,"time":1787947133429,"pid":3374940,"hostname":"dev-dsk-hkobew-1d
-51fde466.us-east-1.amazon.com","msg":"Server listening on port 8080"}
...
[separate terminal]
> curl -X POST http://127.0.0.1:8080/invocations \
-H 'Content-Type: application/json' -H 'Accept: text/event-stream' \
-H 'x-amzn-bedrock-agentcore-runtime-session-id: strands-ts-e2e-session-0000000000
02' \
-d '{"prompt":"Reply with exactly: STRANDS_TS_DEV_OK"}'
data: "STRANDS_TS_DEV"
data: "_OK"
> agentcore project runtime add --template strands-ts --memory none --name bob Reading project spec file at '/[..]'
Scaffolding runtime in project
Installing Node dependencies with npm
Updating project spec file at '/local/home/hkobew/gh-repos/agentcore-cli/.claude/worktrees/s
trands-ts-template/hello/agentcore/agentcore.json'
added runtime 'bob' to 'hello'
> agentcore project deploy
..
[invoke both in the console]. 

Notes

discovered in testing that the python sdk allows missing sessionId but ts sdk rejects it: https://github.com/aws/bedrock-agentcore-sdk-typescript/blob/v0.3.0/src/runtime/app.ts#L337-L341. Small papercut on the local dev experience.

[agentcore-devx-automation]

Claude Security Review: no high-confidence findings. (run)

[agentcore-devx-automation]

Claude Security Review: no high-confidence findings. (run)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.30%. Comparing base (adb02a1) to head (bd35521).

Additional details and impacted files

@@ Coverage Diff @@## refactor #2142 +/- ##
============================================
+ Coverage 97.29% 97.30% +0.01% 
============================================
Files 478 478 Lines 29642 29699 +57 ============================================
+ Hits 28840 28899 +59 + Misses 802 800 -2 

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[Hweinstock]

this is now resolved within the template. We can bring it back if we choose to support BYO again.