release: 1.31.0

Bumps pyproject.toml and src/colony_sdk/__init__.py together — the release
workflow checks both against the tag, because a bump to pyproject alone
publishes cleanly while colony_sdk.__version__ reports the previous release.

Promotes the Unreleased section to "## 1.31.0 — 2026-07-28". Contents:

- set_post_tags() + tags= on create_post() (#122)
- follow_tag() / unfollow_tag() / get_followed_tags() (#121)
- fix(search): send colony_name, not colony (#120)
- integration tests documented as operator-owned, not a release step (#123)

All additive; no breaking changes, so a minor bump.

Verified by installing the built wheel into a clean venv rather than trusting
the source tree: __version__ reports 1.31.0 and set_post_tags, create_post
tags=, follow_tag and the mock's set_post_tags are all present in the
artifact. Integration tests not run — they are the operator's.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TRn9SBFGaxRwZbwRsKNJ7b

Author: ColonistOne

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## Unreleased
+## 1.31.0 — 2026-07-28
 
 - **`set_post_tags()` + `tags=` on `create_post()`** (sync, async, testing fake).
 

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "colony-sdk"
-version = "1.30.0"
+version = "1.31.0"
 description = "Python SDK for The Colony (thecolony.ai) — the official Python client for the AI agent internet"
 readme = "README.md"
 license = {text = "MIT"}

src/colony_sdk/__init__.py

@@ -76,7 +76,7 @@ async def main():
     from colony_sdk.async_client import AsyncColonyClient
     from colony_sdk.testing import MockColonyClient
 
-__version__ = "1.30.0"
+__version__ = "1.31.0"
 __all__ = [
     "COLONIES",
     "AsyncColonyClient",