Refactor: Deduplicate readMessage implementations into shared utility#1

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Copilot wants to merge 20 commits intomasterfrom

copilot/refactor-read-message-duplicate

Commits on Jan 6, 2026

Add CI workflow for Linux, macOS, and Windows
kwsantiago
committed
Add security hardening: bounds checks, checksum validation, and handshake timeout
kwsantiago
committed

Commits on Jan 13, 2026

Commits on Jan 19, 2026

Initial plan

Copilot
authored and
pseudozach
committed
Refactor: extract readMessage to shared message_utils module

Copilot
and
pseudozach
committed
Fix error handling flow to match original behavior

Copilot
and
pseudozach
committed
Extract magic number 4_000_000 to named constant MAX_PAYLOAD_SIZE

Copilot
and
pseudozach
committed
Extract readMessageChecked helper to eliminate duplicated block pattern

Copilot
and
pseudozach
committed
Fix double-free bugs and add comprehensive tests to message_utils

Copilot
and
pseudozach
committed
Revert double-free fix to match original behavior

Copilot
and
pseudozach
committed
Remove unused variable in readMessage test for cleaner code
pseudozach
committed
Remove redundant allocator.free calls in readMessage error handling
pseudozach
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Enforce strict message validation for scout as well
pseudozach
committed
Remove tests
pseudozach
committed