feat(forge): add GitLab forge client implementation

AGENTS.md

@@ -1,6 +1,6 @@
 # AGENTS.md
 
-Fullsend is a platform for fully autonomous agentic development for GitHub-hosted organizations. It contains design documents organized by problem domain (`docs/`) and a Go CLI (`cmd/fullsend/`) that manages GitHub App setup and org configuration. See [fullsend.sh](https://fullsend.sh) for the full documentation site.
+Fullsend is a platform for fully autonomous agentic development for Git-hosted organizations (GitHub, GitLab, Forgejo). It contains design documents organized by problem domain (`docs/`) and a Go CLI (`cmd/fullsend/`) that manages forge setup and org configuration. See [fullsend.sh](https://fullsend.sh) for the full documentation site.
 
 ## How to work in this repo
 

README.md

@@ -1,6 +1,6 @@
 # Fullsend
 
-Autonomous agentic software development for GitHub-hosted organizations.
+Autonomous agentic software development for Git-hosted organizations (GitHub, GitLab, Forgejo).
 
 Fullsend agents triage issues, implement solutions, review code, and merge to production autonomously — while being secure by design.
 

docs/guides/dev/behaviour-drivers.md

@@ -52,7 +52,7 @@ Use `forge.Client` for operations it already exposes; add REST helpers inside th
 
 ## Step definitions
 
-Steps must **not** import `internal/forge/github` directly — only drivers. This keeps scenarios vendor-agnostic.
+Steps must **not** import forge-specific packages (`internal/forge/github`, `internal/forge/gitlab`) directly — only drivers. This keeps scenarios vendor-agnostic.
 
 Steps use `world.Install` for config repo paths (`ConfigOwner`, `ConfigRepo`, `ConfigPathPrefix`) instead of hardcoding the per-org `.fullsend` config repo.
 

docs/guides/getting-started/getting-inference.md

@@ -60,7 +60,7 @@ for, and `<gcp-project>` is your GCP project name. The output resembles:
 
 ```text
 ⚡ fullsend <version>
-  Autonomous agentic development for GitHub organizations
+  Autonomous agentic development for Git-hosted organizations
 
 → Provisioning WIF for repo-scoped inference: <org>/<repo>
 

docs/guides/getting-started/org-mode.md

@@ -33,7 +33,7 @@ Where `<org>` is the GitHub organization and `<gcp-project>` is your GCP project
 
 ```text
 ⚡ fullsend <version>
-  Autonomous agentic development for GitHub organizations
+  Autonomous agentic development for Git-hosted organizations
 
 → Provisioning WIF for org-scoped inference: <org>
 

docs/vision.md

@@ -49,7 +49,7 @@ Modern coding agents have largely solved the code generation problem. Given a we
 - **Authority and governance** — who decides what agents can do?
 - **Security** — how do we prevent the autonomous system from being exploited?
 
-This project exists to explore these problems in a way that's applicable to any GitHub-hosted organization, though the patterns may need adaptation for specific organizational contexts. See [docs/problems/applied/](problems/applied/) for organization-specific considerations.
+This project exists to explore these problems in a way that's applicable to any Git-hosted organization, though the patterns may need adaptation for specific organizational contexts. See [docs/problems/applied/](problems/applied/) for organization-specific considerations.
 
 ## Principles
 

internal/cli/root.go

@@ -33,8 +33,8 @@ func resolveUpstreamRef() (ref, tag string) {
 func newRootCmd() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:           "fullsend",
-		Short:         "Autonomous agentic development for GitHub organizations",
-		Long:          "fullsend automates the setup and management of agentic development pipelines for GitHub organizations.",
+		Short:         "Autonomous agentic development for Git-hosted organizations",
+		Long:          "fullsend automates the setup and management of agentic development pipelines for Git-hosted organizations.",
 		SilenceUsage:  true,
 		SilenceErrors: true,
 		Version:       version,