feat(js): add TCP/TLS integration tests and examples

[atharvalade]

Which issue does this PR close?

Closes #2808

Rationale

No TLS integration tests or TLS examples existed for the Node.js SDK despite full TLS transport support.

What changed?

The Node.js SDK had TLS transport implemented via createTlsSocket() but no tests exercising it and no examples showing usage.

Added TLS e2e tests in foreign/node/src/e2e/tls.system.e2e.ts covering ping, login, stats, send/poll messages over TLS, and plain TCP failure when TLS is required. Added tcp-tls/producer.ts and tcp-tls/consumer.ts examples using transport: 'TLS' with custom CA certificate from core/certs/.

Local Execution

Passed. eslint clean on both examples/node and foreign/node.

AI Usage

1. Opus 4.6
2. guided by existing getting-started examples and tcp.system.e2e.ts test patterns
3. Compiled and linted locally, verified code follows existing patterns exactly
4. Yes

[atharvalade]

Resolved

[codecov]

Codecov Report

❌ Patch coverage is 38.02817% with 88 lines in your changes missing coverage. Please review.
✅ Project coverage is 68.30%. Comparing base (ecd7709) to head (4bc0f69).

Files with missing lines	Patch %	Lines
foreign/node/src/e2e/tls.system.e2e.ts	38.02%	88 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2822      +/-   ##
============================================
- Coverage     68.36%   68.30%   -0.07%     
  Complexity      739      739              
============================================
  Files          1053     1054       +1     
  Lines         84763    84905     +142     
  Branches      61297    61307      +10     
============================================
+ Hits          57948    57991      +43     
- Misses        24448    24532      +84     
- Partials       2367     2382      +15     

Flag	Coverage Δ
csharp	67.45% <ø> (-0.17%)	⬇️
go	6.27% <ø> (ø)
java	54.83% <ø> (ø)
node	91.48% <38.02%> (-0.93%)	⬇️
python	81.57% <ø> (ø)
rust	70.05% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
foreign/node/src/e2e/tls.system.e2e.ts	38.02% <38.02%> (ø)

... and 13 files with indirect coverage changes

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[T1B0]

some file(s) ( "../init" ?) missing from PR, i can't assert it transpile or work as it is

[mmodzelewski]

The examples should be added to test-examples.sh/README.md

[atharvalade]

The examples should be added to test-examples.sh/README.md

added

[T1B0]

all fixed ! LGTM 🚀