Add EXIF mouse-over tooltip to the normal image view

The details view already showed a title="" hover summary (camera, aperture,
ISO, shutter, date) on its image; the normal image view did not. Wire the
same tooltip into view.tmpl:

- render_view_page now computes the EXIF tooltip via photo_exif_tooltip_text
  (reusing the shared identify cache, so no extra ImageMagick work) and passes
  it as the exif_tooltip context var.
- exif_tooltip is now a required render field for the view template too.
- view.tmpl adds the title="" attribute to its <img> when the summary is
  non-empty, mirroring details.tmpl (no title when there is no EXIF).
- Tests: extend the EXIF render test to assert the view image carries the same
  tooltip, and update the required-context-vars expectation for view.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/tests/cli.sh b/tests/cli.sh
index a78741a..f01c2e0 100755
--- a/tests/cli.sh
+++ b/tests/cli.sh
@@ -3846,7 +3846,7 @@ preview:animation_class backhref html_dir page_num photo preview_num thumbs_dir
 redirect:html_dir redirect_page
 splash:backhref background_image blurs_dir enter_page html_dir photo photos_dir
 stats:backhref html_dir stats_body
-view:animation_class backhref html_dir page_num photo photos_dir preview_num
+view:animation_class backhref exif_tooltip html_dir page_num photo photos_dir preview_num
 END
     )
     output=$(
@@ -4785,6 +4785,10 @@ test_generate_renders_exif_details() {
     details_html=$(<"$TEST_TMPDIR/dist/1-1-details.html")
 
     test::assert_contains 'href="1-1-details.html">Details</a>' "$view_html"
+    # The normal image view carries the same EXIF tooltip as the details view.
+    test::assert_contains \
+        'title="Camera: ExampleCam Model &amp; &quot;X&quot;; Aperture: f/2.8; ISO: 400; Shutter speed: 1/125; Taken: 2026:06:04 12:34:56"' \
+        "$view_html"
     test::assert_contains '<table class="details">' "$details_html"
     test::assert_contains \
         'title="Camera: ExampleCam Model &amp; &quot;X&quot;; Aperture: f/2.8; ISO: 400; Shutter speed: 1/125; Taken: 2026:06:04 12:34:56"' \