Backtrace of the panic in the Agent pane:
```
Thread "<unnamed>" panicked with "called `Option::unwrap()` on a `None` value" at crates/markdown/src/parser.rs:264:55
3fdbc3090d/src/crates/markdown/src/parser.rs (L264) (may not be uploaded, line may be incorrect if files modified)
0: zed::reliability::init_panic_hook::{{closure}}
at /home/silver/develop/zed/crates/zed/src/reliability.rs:56:29
1: <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call
at /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/alloc/src/boxed.rs:1990:9
std::panicking::rust_panic_with_hook
at /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/std/src/panicking.rs:839:13
2: std::panicking::begin_panic_handler::{{closure}}
at /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/std/src/panicking.rs:697:13
3: std::sys::backtrace::__rust_end_short_backtrace
at /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/std/src/sys/backtrace.rs:168:18
4: rust_begin_unwind
at /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/std/src/panicking.rs:695:5
5: core::panicking::panic_fmt
at /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/core/src/panicking.rs:75:14
6: core::panicking::panic
at /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/core/src/panicking.rs:145:5
7: core::option::unwrap_failed
at /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/core/src/option.rs:2015:5
8: core::option::Option<T>::unwrap
at /home/silver/.rustup/toolchains/1.86-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:978:21
markdown::parser::parse_markdown
at /home/silver/develop/zed/crates/markdown/src/parser.rs:264:37
9: markdown::Markdown::parse::{{closure}}
at /home/silver/develop/zed/crates/markdown/src/markdown.rs:282:51
10: <core::pin::Pin<P> as core::future::future::Future>::poll
at /home/silver/.rustup/toolchains/1.86-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/future/future.rs:124:9
11: async_task::raw::RawTask<F,T,S,M>::run
at /home/silver/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/async-task-4.7.1/src/raw.rs:557:17
12: async_task::runnable::Runnable<M>::run
at /home/silver/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/async-task-4.7.1/src/runnable.rs:781:18
13: gpui::platform::linux::dispatcher::LinuxDispatcher:🆕:{{closure}}::{{closure}}
at /home/silver/develop/zed/crates/gpui/src/platform/linux/dispatcher.rs:44:25
14: std::sys::backtrace::__rust_begin_short_backtrace
at /home/silver/.rustup/toolchains/1.86-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/sys/backtrace.rs:152:18
15: std:🧵:Builder::spawn_unchecked_::{{closure}}::{{closure}}
at /home/silver/.rustup/toolchains/1.86-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/thread/mod.rs:559:17
16: <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once
at /home/silver/.rustup/toolchains/1.86-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/panic/unwind_safe.rs:272:9
17: std::panicking::try::do_call
at /home/silver/.rustup/toolchains/1.86-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/panicking.rs:587:40
18: __rust_try
19: std::panicking::try
at /home/silver/.rustup/toolchains/1.86-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/panicking.rs:550:19
std::panic::catch_unwind
at /home/silver/.rustup/toolchains/1.86-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/panic.rs:358:14
std:🧵:Builder::spawn_unchecked_::{{closure}}
at /home/silver/.rustup/toolchains/1.86-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/thread/mod.rs:557:30
20: core::ops::function::FnOnce::call_once{{vtable.shim}}
at /home/silver/.rustup/toolchains/1.86-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
21: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
at /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/alloc/src/boxed.rs:1976:9
<alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
at /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/alloc/src/boxed.rs:1976:9
std::sys::pal::unix:🧵:Thread:🆕:thread_start
at /rustc/05f9846f893b09a1be1fc8560e33fc3c815cfecb/library/std/src/sys/pal/unix/thread.rs:106:17
22: start_thread
at ./nptl/pthread_create.c:447:8
23: clone3
at ./misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:78:0
Segmentation fault
```
Release Notes:
- N/A *or* Added/Fixed/Improved ...
---------
Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>
bb7a5b13df