v0.84.0

# If you like caching and coding on your Android, you’ll love Crush v0.84.0

This is a mini release with two little niceties:

## Cachemaxxing

Crush now sends the fabled `x-session-affinity` header (and `x-session-id`) in its requests. Supporting providers can pick the header up, pin the session to a given replica, and go cache wild. The session header is a hash with no personally identifiable information, of course.

## Fixed: Termux

If you’re a nerd with an Android, you probably use Termux, the hot Android terminal emulator. If you’re a cool nerd, you probably _want_ to use Crush on an Android and are annoyed that it was broken. Thanks to @Ricardo-M-L, Crush now works on Android again.

Hope you're having a great summer! Unless you're in South America, Central America, the Southern part of Mexico, parts of Africa or Australia, in which case…hope you're enjoying the Winter!

xoxo,
Charm 🍔

## Changelog
### New!
* ebd845c003579484171922fda8a671367eee7684: feat(agent): send session hash in header for cache affinity (@meowgorithm)
### Fixed
* 5b61432984ba271cf9cb3791295ba94e9c2c8f81: fix(release): drop broken .termux.deb artifact (#2848) (@Ricardo-M-L)
* e3074f14cec703bdddba13e6df5cf2242b34194c: fix(server): show update notices in client-server mode (@meowgorithm)

---

<details>
<summary>Verifying the artifacts</summary>

First, download the [`checksums.txt` file](https://github.com/charmbracelet/crush/releases/download/v0.84.0/checksums.txt) and the [`checksums.txt.sigstore.json` file](https://github.com/charmbracelet/crush/releases/download/v0.84.0/checksums.txt.sigstore.json) files, for example, with `wget`:

```bash
wget 'https://github.com/charmbracelet/crush/releases/download/v0.84.0/checksums.txt'
wget 'https://github.com/charmbracelet/crush/releases/download/v0.84.0/checksums.txt.sigstore.json'
```

Then, verify it using [`cosign`](https://github.com/sigstore/cosign):

```bash
cosign verify-blob \
  --certificate-identity 'https://github.com/charmbracelet/meta/.github/workflows/goreleaser.yml@refs/heads/main' \
  --certificate-oidc-issuer 'https://token.actions.githubusercontent.com' \
  --bundle 'checksums.txt.sigstore.json' \
  ./checksums.txt
```

If the output is `Verified OK`, you can safely use it to verify the checksums of other artifacts you downloaded from the release using `sha256sum`:

```bash
sha256sum --ignore-missing -c checksums.txt
```

Done! You artifacts are now verified!

</details>

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