* Fix MCP startup transport compatibility
* Preserve CLI flags in MCP startup fix
* Harden MCP transport error handling
* Harden transport security and improve type safety
Transport hardening:
- Add MAX_BUFFER_SIZE (10 MB) cap to prevent OOM from oversized
Content-Length or unbounded newline-delimited input
- Replace recursive readNewlineMessage with iterative loop to prevent
stack overflow from consecutive empty lines
- Tighten looksLikeContentLength to require 14+ bytes before matching
- Add closed-state guard and error handling to send()
- Simplify processReadBuffer loop to break on error
- Fix loose equality (==) to strict (===)
- Widen constructor param types to ReadableStream/WritableStream
Type safety:
- Constrain createLazyAction generics so export name is validated
against the module's actual exports at compile time
- Use proper type guard instead of lint suppression
- Fix test tsconfig type errors
Regression tests for all hardening fixes (13 tests passing).
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Co-authored-by: Gergo Magyar <gergomagyar@icloud.com>
