feat: add generateSelectedVideos CLI runner for Veo video generation

Implements the shared CLI runner that calls video.VeoGenerator for each
selected gallery page number sequentially, printing progress and the saved
MP4 path per page. Lives in internal/cli/video_runner.go.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/internal/cli/video_runner.go b/internal/cli/video_runner.go
new file mode 100644
index 0000000..40a1fdd
--- /dev/null
+++ b/internal/cli/video_runner.go
@@ -0,0 +1,46 @@
+package cli
+
+import (
+	"context"
+	"fmt"
+
+	"codeberg.org/snonux/totalrecall/internal/video"
+)
+
+// generateSelectedVideos is the CLI runner that animates gallery PNG files
+// into MP4 clips using Google's Veo model. It processes pages sequentially
+// (Veo generation is slow and API quotas make parallelism impractical).
+//
+// apiKey is the Google/Gemini API key passed by the caller.
+// selected is the list of gallery page numbers to process (from promptForGalleryVideos).
+// outputDir is both the directory that contains the gallery PNGs and the
+// destination for the resulting MP4 files (written next to the PNGs).
+//
+// Each page prints a "Generating…" line before the API call and a "Video saved:"
+// line with the output path on success. The function stops and returns on the
+// first error so callers can log it without silently skipping pages.
+func generateSelectedVideos(apiKey string, selected []int, outputDir string) error {
+	if len(selected) == 0 {
+		return nil
+	}
+
+	gen, err := video.NewVeoGenerator(apiKey)
+	if err != nil {
+		return fmt.Errorf("cli: initialising Veo generator: %w", err)
+	}
+
+	ctx := context.Background()
+
+	for _, pageNum := range selected {
+		fmt.Printf("Generating video for gallery page %d...\n", pageNum)
+
+		mp4Path, err := gen.GenerateVideoFromGallery(ctx, outputDir, outputDir, pageNum)
+		if err != nil {
+			return fmt.Errorf("cli: generating video for page %d: %w", pageNum, err)
+		}
+
+		fmt.Printf("Video saved: %s\n", mp4Path)
+	}
+
+	return nil
+}