[codex] Consolidate shared prompts in codex-prompts (#25151)

## Why

`codex_core` is consistently a bottleneck for incremental builds during
iteration. The simplest fix is to make the crate smaller.

## Summary

`codex-core` owns several reusable prompt renderers and static prompt
assets, which makes the crate harder to split apart.

Rename `codex-review-prompts` to `codex-prompts` and move shared review,
goal, permissions, compaction, realtime, hierarchical AGENTS.md, and
`apply_patch` prompts into it. Move prompt-only tests and update
consumers and `CODEOWNERS`.

## Validation

- `just test -p codex-prompts -p codex-apply-patch`
- `just test -p codex-core prompt_caching`
- Bazel builds for the affected crates

codex-rs/apply-patch/src/lib.rs

@@ -31,9 +31,6 @@ pub use standalone_executable::main;
 
 use crate::invocation::ExtractHeredocError;
 
-/// Detailed instructions for gpt-4.1 on how to use the `apply_patch` tool.
-pub const APPLY_PATCH_TOOL_INSTRUCTIONS: &str = include_str!("../apply_patch_tool_instructions.md");
-
 /// Special argv[1] flag used when the Codex executable self-invokes to run the
 /// internal `apply_patch` path.
 ///