Fix server compatibility with 0.20.[27-29] clients (#4148)

Ignore `GatewayConfiguration.router` in client
requests if `null`, which is what 0.20.27,
0.20.28, and 0.20.29 clients send by default.

Add 0.21 section to the upgrade guide (#4106)

Implement within_fleets filter via entity_fleet_id (#4062)

[Feature] Endpoint presets (#4028)

* Add endpoint preset creation and reuse

* Fix endpoint agent Windows launchers

* Fix endpoint preset tests on Windows

* Improve endpoint preset lifecycle

* Fix formatting in endpoint preset list output

* Improve endpoint preset apply output

* Isolate endpoint interrupt test from SSH check

* Refine endpoint preset terminology and output

* Persist endpoint agent progress logs

* Make endpoint output test width-independent

* Document endpoint preset progress output

* Preserve endpoint benchmark output in narrow terminals

* Improve endpoint preset output and docs

* Add endpoint preset creation time

* Stabilize endpoint preset output test

* Keep endpoint output test fix isolated

* Add endpoint preset get command

* Isolate endpoint CLI tests from SSH

* Use existing Claude authentication by default

* Document endpoint preset roadmap

* Move endpoint preset code to CLI packages

* Fix Windows type check for endpoint agent

* Reuse planned endpoint preset configuration

* Fix endpoint configuration reference

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Co-authored-by: Andrey Cheptsov <andrey.cheptsov@github.com>

Drop cudo backend (#4018)

Apply Capacity Reservation tenancy to AWS instance launch (#3992)

A Capacity Reservation created with non-default tenancy (e.g. `dedicated`)
only accepts instances launched with a matching `Placement.Tenancy`.
Previously dstack always launched with the implicit `default` tenancy, so
runs targeting a dedicated-tenancy reservation failed to match it.

Read `Tenancy` from the reservation dstack already queries in
`create_instance` and pass it through to `create_instances_struct`, which
sets `Placement.Tenancy` when it is non-default. No user-facing config; it
is detected automatically from the reservation and merges cleanly with the
placement-group `Placement` entry.

Assisted-by: Claude

Replace lsblk fs detection with blkid (#3979)

* Replace lsblk fs detection with blkid

* Probe filesystem multiple times

Support targeting specific run instances

Co-authored-by: Federico D'Agostino <fede.dagos@gmail.com>

[JarvisLabs] Support RTX PRO 6000; update gpuhunt dependency (#3943)

* Support JarvisLabs RTX PRO 6000

* Update gpuhunt dependency

* Clean up JarvisLabs SSH keys

* Document JarvisLabs SSH key limit

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Co-authored-by: Andrey Cheptsov <andrey.cheptsov@github.com>

[Docs]: Describe image pull progress format