Plan Thumbnail Revision After Speaker Feedback

Problem/Feature Description

A speaker already generated a first thumbnail for their talk "Robocoders: Judgment Day" using slide 10 (a courtroom illustration). The speaker reviewed it and gave this feedback:

"The face looks a bit too idealized — doesn't look like me. Also, I want the text at the top instead of the bottom. And let's try the split_panel style instead of overlay. Keep the same slide and title text."

The agent must plan the revision. The speaker chose slide 10, which has an existing illustration in the illustrations/ directory. The profile has thumbnail preferences configured but the speaker is overriding some of them for this iteration.

Using the illustrations skill, plan the thumbnail revision. Document the exact command and explain the revision strategy.

Output Specification

Produce the following files:

1. revision-plan.md — The complete revision plan including:
   • The revised generate-thumbnail.py command with updated arguments
   • Where the slide image comes from (resolution chain)
   • How the "face looks too idealized" feedback is addressed
   • Strategy explanation
2. original-vs-revised.md — Side-by-side comparison of original and revised command arguments showing what changed

Input Files

The following files are provided as inputs. Extract them before beginning.

=============== FILE: inputs/speaker-profile.json =============== { "schema_version": 1, "generated_date": "2026-04-15", "talks_analyzed": 1, "speaker": { "name": "Baruch Sadogursky", "handle": "@jbaruch", "website": "https://jbaru.ch", "shownotes_url_pattern": "https://jbaru.ch/{slug}" }, "publishing_process": { "thumbnail": { "enabled": true, "speaker_photo_path": "/Users/jbaruch/photos/devnexus-headshot.jpg", "style_preference": "overlay", "title_position": "bottom", "brand_colors": ["#5B2C6F", "#C0392B"] } } }

=============== FILE: inputs/outline.yaml =============== talk: title: "Robocoders: Judgment Day" slug: "devnexus-2026-robocoders-judgment-day" speakers: ["Baruch"] duration_min: 45 audience: "DevNexus 2026 attendees" mode: "keynote" venue: "DevNexus 2026" slide_budget: 60 pacing_wpm: [135, 145] architecture: "narrative-arc"

style_anchor: model: "gemini-3-pro-image-preview" full: | Retro sci-fi propaganda poster aesthetic. Bold colors, dramatic lighting. imgtxt: | Retro sci-fi propaganda poster, portrait orientation. Bold colors. conventions: "Title typography mimics 1950s propaganda posters."

chapters:

• id: ch-reality title: "The Reality Check" target_min: 12 argument_beats:
  • text: "Evidence framing — the verdict." slide_refs: [10]

slides:

• n: 10 chapter: ch-reality title: "The Verdict" format: FULL visual: "Full-bleed illustration of a dramatic courtroom with a robot defendant." image_prompt: | [STYLE ANCHOR]. A dramatic courtroom with a robot defendant. big_idea: true script:
  • line: "The evidence is clear."

=============== FILE: inputs/illustrations/slide-10.png =============== (This file exists as a placeholder — the illustration was generated in Phase 5)

=============== FILE: inputs/first-run-command.txt =============== python3 generate-thumbnail.py
--slide-image illustrations/slide-10.png
--speaker-photo /Users/jbaruch/photos/devnexus-headshot.jpg
--title "JUDGMENT DAY"
--style overlay
--title-position bottom
--brand-colors "#5B2C6F,#C0392B"

Key Parameters

• Selected slide: 10 (courtroom illustration)
• Title text: "JUDGMENT DAY"
• Illustration exists: illustrations/slide-10.png (from Phase 5)