Add real-time deployment updates and refactor JavaScript

- Add deploy stats (last deploy time, total count) to dashboard
- Add recent-deployments API endpoint for real-time updates
- Add live build logs to deployments history page
- Fix git clone regression (preserve entrypoint for simple clones)
- Refactor JavaScript into shared app.js with page init functions
- Deploy button disables immediately on click
- Auto-refresh deployment list and logs during builds
- Format JavaScript with Prettier (4-space indent)

internal/docker/client.go

@@ -554,16 +554,20 @@ func (c *Client) createGitContainer(
 	// Build the git command based on whether we have a specific commit SHA
 	var cmd []string
 
+	var entrypoint []string
+
 	if cfg.commitSHA != "" {
 		// Clone without depth limit so we can checkout any commit, then checkout specific SHA
-		// Using sh -c to run multiple commands
+		// Using sh -c to run multiple commands - need to clear entrypoint
 		script := fmt.Sprintf(
 			"git clone --branch %s %s /repo && cd /repo && git checkout %s",
 			cfg.branch, cfg.repoURL, cfg.commitSHA,
 		)
+		entrypoint = []string{}
 		cmd = []string{"sh", "-c", script}
 	} else {
-		// Shallow clone of branch HEAD
+		// Shallow clone of branch HEAD - use default git entrypoint
+		entrypoint = nil
 		cmd = []string{"clone", "--depth", "1", "--branch", cfg.branch, cfg.repoURL, "/repo"}
 	}
 
@@ -571,7 +575,7 @@ func (c *Client) createGitContainer(
 	resp, err := c.docker.ContainerCreate(ctx,
 		&container.Config{
 			Image:      gitImage,
-			Entrypoint: []string{}, // Clear entrypoint when using sh -c
+			Entrypoint: entrypoint,
 			Cmd:        cmd,
 			Env:        []string{"GIT_SSH_COMMAND=" + gitSSHCmd},
 			WorkingDir: "/",