Trim debuginfo in dev builds

[sox8502]

Shrinks dev/test build output: our crate keeps line tables only, third-party crates get no debuginfo. Release/dist profiles are unchanged; no version bump.

• Panics and backtraces in our code still show file:line.
• Lost: debugger variable inspection, and line numbers for panics inside dependency code.

Clean cargo build + cargo test --no-run on the same tree (macOS arm64):

Setting	target/	Build time
Full debuginfo (old default)	2.62 GiB	111 s
line-tables-only	2.05 GiB (−22%)	89 s
+ deps debug = false (this PR)	1.86 GiB (−29%)	88 s

Test plan

• cargo fmt --all --check, cargo clippy --all-targets -- -D warnings, cargo build --locked, cargo test --locked (1010 passed) on the merged tree
• Size/time comparison above
• CI green

[sox8502]

@greptileai review

[greptile-apps]

Confidence Score: 5/5

[Low risk] Adjusts debug symbol output in local builds.

The PR appears safe to merge.

Summary

The PR reduces dev and test build output by disabling debuginfo for third-party crates. The application retains line-table debuginfo; release and dist profiles are unchanged.

_{Reviews (2) · Last reviewed commit: "Merge remote-tracking branch 'origin/mai..."}

[sox8502]

@greptileai review