Nightly build 2025.01.12

What's Changed

Toolchain and implementation changes 🛠️

• Parse all kinds of declarations at function scope. by @zygoloid in #4779
• Change how diagnostics are ordered by @jonmeow in #4778
• Track params in the parser by @geoffromer in #4777
• Make fingerprinting stable across compatible source changes. by @zygoloid in #4789
• Support associated constants in impl witnesses by @josh11b in #4770

Documentation changes 📝

• Fill in videos and slides for talks by @jonmeow in #4788
• Use explicit conversion between integer types in examples. by @zygoloid in #4792

Full Changelog: v0.0.0-0.nightly.2025.01.10...v0.0.0-0.nightly.2025.01.12