v0.2.0

Breaking Changes

• Protocol prefix renamed PTR: → ETST: (Embedded Test). Firmware must be rebuilt.
• Protocol tags renamed: ETST:CASE:START (was TEST:START), ETST:COUNTS (was TESTS).
• Environment variables renamed PTR_* → ETST_* (shorter: ETST_CASE, ETST_SUITE, etc.). Old PTR_* names still work with deprecation warning.
• Default post-test action changed from sleep to wait (device stays online).

Fixed

• Phase 2 resume: RUN: --wake --tc "exact name" instead of RUN: *name* — fixes tokenizer splitting multi-word names, fixes wildcard substring collisions.
• is_test_wake(): protocol-based --wake flag replaces RTC memory — no sleep memory consumed.
• Skip count reporting: ETST:COUNTS now reflects all filter types, not just RESUME_AFTER.
• Hang detection in line callback mode: detects silent hangs when PIO owns serial.

Added

• Runtime skip control (--unskip-tc, --skip-tc, --no-skip)
• Full doctest CLI passthrough via applyCommandLine()
• ETST:BUSY / ETST:RESTART protocol messages
• Per-test timeout annotations and test count reporting
• Deep sleep test documentation with complete example
• Hang detection documentation (global timeout, per-test, busy signal)
• Aggregate run summary across sleep/wake cycles
• Roadmap: framework abstraction, multi-phase tests, platform expansion

See CHANGELOG.md for full details.