Implement SessionWithTools interface for sseSession to support
session-specific tools:

- Add tools field to sseSession struct
- Implement GetSessionTools and SetSessionTools methods

Co-authored-by: Roman Gelembjuk <Roman Gelembjuk>

This PR fixes the test failures in CI by:
1. Using -buildmode=pie flag when compiling test binaries
2. Using os.CreateTemp() for more reliable temporary file creation
3. Verifying binary existence after compilation
4. Fixing variable shadowing issues

🤖 Generated with opencode
Co-Authored-By: opencode <noreply@opencode.ai>

…larity (#238)

The new name makes its relationship to `WithDynamicBasePath` clearer.
The implementation preserves the original functionality with a build
time warning (in go 1.21+).

…ng (#242)

…241)

CI occasionally failed with the linker error:

    /link: cannot open file DO NOT USE - main build pseudo-cache built

This is most likely because several parallel `go build` invocations
shared the same `$GOCACHE`, letting one job evict the object file
another job had promised the linker. The placeholder path then leaked
through and the build aborted.

This gives each compile its own cache by setting  `GOCACHE=$(mktemp -d)`
for the helper’s `go build` call.

After these changes `go test ./... -race` passed 100/100 consecutive
runs locally.

* fix: Use detached context for SSE message handling
Prevents premature cancellation of message processing when HTTP request ends.

* test for message processing when we return early to the client

* rename variable

---------

Co-authored-by: Yashwanth H L <yashwanth_hl@intuit.com>