docs: clean up unreleased changelog section for v3.0.0

Rename the unreleased header to 3.0.0, drop the test-only fix entry,
re-categorize entries to better match conventional-commits semantics
and the precedent set by prior versions, and order breaking changes
first within each section.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: vdusek

CHANGELOG.md

@@ -3,28 +3,32 @@
 All notable changes to this project will be documented in this file.
 
 <!-- git-cliff-unreleased-start -->
-## 2.5.1 - **not yet released**
+## 3.0.0 - **not yet released**
+
+- Check out the [Upgrading guide](https://docs.apify.com/api/client/python/docs/upgrading/upgrading-to-v3) to ensure a smooth update.
 
 ### 🚀 Features
 
-- [**breaking**] Make HTTP client pluggable with abstract base classes ([#641](https://github.com/apify/apify-client-python/pull/641)) ([5ae33a0](https://github.com/apify/apify-client-python/commit/5ae33a0a801fdacd0c456a8630fea053f9df6550)) by [@vdusek](https://github.com/vdusek), closes [#416](https://github.com/apify/apify-client-python/issues/416)
+- [**breaking**] Introduce fully typed clients ([#604](https://github.com/apify/apify-client-python/pull/604)) ([81ee194](https://github.com/apify/apify-client-python/commit/81ee1943b400b49797868fe4dfa52d1662e09370)) by [@vdusek](https://github.com/vdusek), closes [#21](https://github.com/apify/apify-client-python/issues/21), [#481](https://github.com/apify/apify-client-python/issues/481)
 - [**breaking**] Introduce tiered timeout system with per-endpoint configuration ([#653](https://github.com/apify/apify-client-python/pull/653)) ([723ec6e](https://github.com/apify/apify-client-python/commit/723ec6e5954474767a5ecbf4902d9b62f7d214f8)) by [@vdusek](https://github.com/vdusek)
+- Make HTTP client pluggable with abstract base classes ([#641](https://github.com/apify/apify-client-python/pull/641)) ([5ae33a0](https://github.com/apify/apify-client-python/commit/5ae33a0a801fdacd0c456a8630fea053f9df6550)) by [@vdusek](https://github.com/vdusek), closes [#416](https://github.com/apify/apify-client-python/issues/416)
 - Accept Pydantic models as alternatives to dicts in resource client methods ([#663](https://github.com/apify/apify-client-python/pull/663)) ([b778c20](https://github.com/apify/apify-client-python/commit/b778c2040228ff9f5a97765de10535cec3f0353e)) by [@vdusek](https://github.com/vdusek), closes [#421](https://github.com/apify/apify-client-python/issues/421)
 - Add ownership parameter to storage collection listing methods ([#696](https://github.com/apify/apify-client-python/pull/696)) ([51a92a3](https://github.com/apify/apify-client-python/commit/51a92a31dac5dd433acfaea76155011d0892d8c8)) by [@nmanerikar](https://github.com/nmanerikar)
 - Add filter and cursor parameters to list_requests method ([#743](https://github.com/apify/apify-client-python/pull/743)) ([3445ff7](https://github.com/apify/apify-client-python/commit/3445ff74e61d5f1f9a964f2ee3c14d198298f709)) by [@mvolfik](https://github.com/mvolfik)
 
 ### 🐛 Bug Fixes
 
-- Guard integration test resource names against 63-char API limit ([#729](https://github.com/apify/apify-client-python/pull/729)) ([47a7a69](https://github.com/apify/apify-client-python/commit/47a7a6967e28c7042fa8e75cd4c138356495fa2c)) by [@vdusek](https://github.com/vdusek)
 - Prevent `_prepare_request_call` from mutating caller&#x27;s headers dict ([#746](https://github.com/apify/apify-client-python/pull/746)) ([d553162](https://github.com/apify/apify-client-python/commit/d5531621535f5a491be5b5791ea4b80e46de1405)) by [@vdusek](https://github.com/vdusek)
 
 ### 🚜 Refactor
 
-- [**breaking**] Introduce fully typed clients ([#604](https://github.com/apify/apify-client-python/pull/604)) ([81ee194](https://github.com/apify/apify-client-python/commit/81ee1943b400b49797868fe4dfa52d1662e09370)) by [@vdusek](https://github.com/vdusek), closes [#21](https://github.com/apify/apify-client-python/issues/21), [#481](https://github.com/apify/apify-client-python/issues/481)
-- [**breaking**] Drop support for Python 3.10 ([#636](https://github.com/apify/apify-client-python/pull/636)) ([7895a4e](https://github.com/apify/apify-client-python/commit/7895a4e60145f490911044da4aa7e3c1c424d416)) by [@vdusek](https://github.com/vdusek)
 - [**breaking**] Update default timeout tiers on non-storage resource clients ([#664](https://github.com/apify/apify-client-python/pull/664)) ([0b35bbe](https://github.com/apify/apify-client-python/commit/0b35bbe212a8a64c5aea5d5d813315252760b055)) by [@vdusek](https://github.com/vdusek)
 - [**breaking**] Use snake case for `actors().list(sort_by=...)` ([#736](https://github.com/apify/apify-client-python/pull/736)) ([eb70b64](https://github.com/apify/apify-client-python/commit/eb70b64eac86faba5cbe943845ad144ec0277896)) by [@vdusek](https://github.com/vdusek), closes [#700](https://github.com/apify/apify-client-python/issues/700)
 
+### ⚙️ Miscellaneous Tasks
+
+- [**breaking**] Drop support for Python 3.10 ([#636](https://github.com/apify/apify-client-python/pull/636)) ([7895a4e](https://github.com/apify/apify-client-python/commit/7895a4e60145f490911044da4aa7e3c1c424d416)) by [@vdusek](https://github.com/vdusek)
+
 
 <!-- git-cliff-unreleased-end -->
 ## [2.5.0](https://github.com/apify/apify-client-python/releases/tag/v2.5.0) (2026-02-18)