Add crash subcommand: symbolicate whole Apple .ips/.crash reports

[everettjf]

Summary

Adds a crash subcommand that symbolicates an entire Apple crash report and rewrites it in place:

• Both formats — modern .ips (JSON metadata line + JSON body with usedImages/threads) and legacy .crash (text Binary Images: table + thread frames). Format is auto-detected.
• Per-image symbol matching — every referenced image is matched against one or more --dsym-dir directories by Mach-O UUID or ELF build-id. The directories are indexed once, then each image's frames are symbolized in a single pass through the existing engine (so dSYM/debuglink/fat-slice handling all apply).
• In-place rewrite — .ips frames gain symbol/symbolLocation/sourceFile/sourceLine; .crash frame lines get their trailing detail replaced with symbol (file:line) (or symbol + offset). Images without a matching dSYM are left untouched, so partial symbol sets still yield a usable report.
• I/O — reads a report path or stdin; writes stdout or --output <FILE>.

Usage:

atosl crash MyApp-2024.ips --dsym-dir ./dsyms
cat MyApp.crash | atosl crash --dsym-dir ./dsyms > MyApp.symbolicated.crash

Implementation notes

• New src/crash.rs module; reuses with_symbolizer, the directory UUID/build-id index, and normalize_hex_id (now pub(crate)).
• The crash token is routed to its own parser before the default address parser, so the report path never competes with the top-level positional addresses (clap can't disambiguate a bare positional from a subcommand). The flat atosl -o ... -l ... <addr> interface is unchanged.
• Remote/HTTP debuginfod is still out of scope; image lookup uses local --dsym-dir directories (and the existing debuginfod cache via the engine).

Test plan

• cargo fmt, cargo clippy --all-targets -- -D warnings, cargo test (all green locally)
• New Linux-gated integration tests symbolicate a real ELF fixture (matched by build-id) through both the .crash text and .ips JSON paths end-to-end
• Existing 12 CLI tests and the flat interface unaffected

Note: real-world Apple .ips/.crash files reference Mach-O images, which can only be exercised end-to-end on macOS; the Linux CI tests cover the parsers and the full orchestration via build-id-matched ELF fixtures.

https://claude.ai/code/session_01XAne4ituXPChWeo9TjA3z7

---

Generated by Claude Code