fix: pin click>=8.1 to prevent Python 3.14/Homebrew env isolation crash (#1648)

* fix: pin click>=8.1 to prevent Python 3.14/Homebrew env isolation failures

Fixes #1631. When uv installs specify-cli on macOS with Homebrew Python
3.14, the virtual environment can fail to fully isolate from the system
site-packages, causing Homebrew's click to be loaded instead of the one
uv installed. If that system click is older than 8.1, it lacks the `ctx`
keyword argument in `ParamType.get_metavar()`, which typer 0.24.0 requires,
resulting in:

  TypeError: ParamType.get_metavar() got an unexpected keyword argument 'ctx'

Adding an explicit `click>=8.1` dependency gives uv a hard constraint so
the correct version is always resolved and installed.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Update CHANGELOG.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

CHANGELOG.md

@@ -8,6 +8,12 @@ All notable changes to the Specify CLI and templates are documented here.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.1.2] - 2026-02-20
+
+### Fixed
+
+- **Python 3.14 / Homebrew compatibility**: Added explicit `click>=8.1` dependency so the resolver always selects a Click version compatible with Python 3.14 and avoids errors such as `TypeError: ParamType.get_metavar() got an unexpected keyword argument 'ctx'` when an older Click would otherwise be used. Note that broader uv/Homebrew environment isolation or `sys.path` bleed issues (see [#1631](https://github.com/github/spec-kit/issues/1631)) may still require environment-level workarounds.
+
 ## [0.1.1] - 2026-02-13
 
 ### Added