docs(changelog): update for v0.3.7 release

Add changelog entry summarizing additions, changes, and fixes for version v0.3.7, including improved git diff handling, test updates, and README tweaks.

CHANGELOG.md

@@ -1,3 +1,20 @@
+## [v0.3.7] - 2026-03-31
+
+Version v0.3.7: Patchin' up git diffs because exit codes shouldn't be drama queens.
+
+### Added
+- Introduce `gitDiff` variable as a mockable wrapper for `git.Diff`.
+- Introduce git.Diff function that uses CombinedOutput and treats exit code 1 as success.
+
+### Changed
+- Update tests to use `withMockGitDiff` for injecting diff mocks.
+- Tweak flag description for clarity.
+- Update prdescribe command to use git.Diff and trim whitespace when checking for empty diffs.
+- Enhance prdescribe output to include base branch in the status message.
+- Update installation and download scripts in README.md to reference v0.3.7.
+
+### Fixed
+- Improve diff handling to tolerate exit code 1.
 ## [v0.3.6] - 2026-03-30
 
 ### Fixed

README.md

@@ -19,13 +19,13 @@ Grokkit is a fast Go CLI integrating Grok AI with git workflows and general chat
 
 **Bash (Linux/macOS):**
 ```bash
-export VERSION=0.3.6
+export VERSION=0.3.7
 curl -fsSL https://repos.gmgauthier.com/gmgauthier/grokkit/releases/download/v${VERSION}/grokkit-install.sh | bash -s -- --verify
 ```
 
 **PowerShell (Windows):**
 ```pwsh
-$env:VERSION="0.3.6"
+$env:VERSION="0.3.7"
  irm https://repos.gmgauthier.com/gmgauthier/grokkit/releases/download/v$env:VERSION/grokkit-install.ps1 | iex
 ```
 
@@ -40,7 +40,7 @@ Both installers feature:
 **Bash (Linux/macOS):**
 
 ```bash
-export VERSION=0.3.6
+export VERSION=0.3.7
 curl -fsSL https://repos.gmgauthier.com/gmgauthier/grokkit/releases/download/v${VERSION}/grokkit-install.sh -o grokkit-install.sh
 bash grokkit-install.sh --verify
 ```
@@ -48,7 +48,7 @@ bash grokkit-install.sh --verify
 **PowerShell (Windows):**
 
 ```pwsh
-$env:VERSION="0.3.6"
+$env:VERSION="0.3.7"
  irm https://repos.gmgauthier.com/gmgauthier/grokkit/releases/download/v$env:VERSION/grokkit-install.ps1 -OutFile grokkit-install.ps1
  .\grokkit-install.ps1 -Verify
 ```