chore: release 0.12.1, begin 0.12.2.dev0 development (#3253)

* chore: bump version to 0.12.1

* chore: begin 0.12.2.dev0 development

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: mnriem

CHANGELOG.md

@@ -2,6 +2,21 @@
 
 <!-- insert new changelog below this comment -->
 
+## [0.12.1] - 2026-06-30
+
+### Changed
+
+- chore: align CI Python matrix with devguide lifecycle + fix bash 3.2 portability (#3244)
+- fix: stop check-prerequisites --paths-only from writing feature.json (#3025) (#3190)
+- docs: document integration catalog subcommands (#3206)
+- fix(scripts): use ASCII [OK] marker in initialize-repo.sh (parity with PowerShell twin) (#3231)
+- docs: document integration `search`/`info`/`scaffold` subcommands (#3174) (#3194)
+- docs: remove Cursor from `specify check` agent list (#3178) (#3193)
+- fix(goose): repoint install_url and docs to goose-docs.ai (#3171) (#3215)
+- fix(scripts): route 'Plan template not found' per --json in setup-plan.ps1 (parity with bash) (#3241)
+- fix(bundle): send command errors to stderr so --json stdout stays parseable (#3235)
+- chore: release 0.12.0, begin 0.12.1.dev0 development (#3243)
+
 ## [0.12.0] - 2026-06-29
 
 ### Changed

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "specify-cli"
-version = "0.12.1.dev0"
+version = "0.12.2.dev0"
 description = "Specify CLI, part of GitHub Spec Kit. A tool to bootstrap your projects for Spec-Driven Development (SDD)."
 readme = "README.md"
 requires-python = ">=3.11"