deck — master-template renderer

Generate a brand-perfect .pptx by composing plans against a brand pack's master.pptx. The master supplies typography, colors, footers, slide-number chrome — the renderer only fills placeholders and clones bespoke shapes.

Quick Start

from pathlib import Path
from feinschliff import FillPlan, render

render(
    Path("feinschliff/brands/feinschliff"),
    [FillPlan(layout="Title Slide", fills={0: "Q3 update", 1: "Roadmap"})],
    Path("out.pptx"),
)

Author the call in feinschliff/.debug/<topic>-<date>/build.py and run it with feinschliff build.py — the plugin's launcher execs the venv Python directly, no CLI in between.

Brand packs

Each pack ships under feinschliff/brands/<name>/ with a master.pptx (or .ref pointer) and catalog files. Built-in packs: feinschliff (default), annual-review, geometric, scientific, shapes, gs-ramspau. Corporate / private packs surface through sibling feinschliff-* plugin directories ($FEINSCHLIFF_BRAND_PATH). Run python -m feinschliff.master_template.catalog <brand_pack> to list layouts + snippets for any pack.

Mental model

A deck is a list of plans, in slide order:

• `FillPlan(layout, fills)` — pick a layout by name (see <brand>/layouts.yaml), fill placeholders by idx. Values: str, list[str], PictureRef, or ChartSpec. Charts and pictures replace the OBJECT placeholder.
• `ClonePlan(source_idx, replacements)` — XML-clone a bespoke source slide from <brand>/snippets.yaml. replacements is a queue per old-string; repeating ("Milestone", ...) consumes successive occurrences in document order.
• `render(..., theme=Path|dict)` — optional. Patches the master's theme1.xml <a:clrScheme> from a small JSON. One master.pptx, N visual variations; the file on disk is never touched.

Flow

1. Interview if the brief is thin. Topic + audience are the minimum; references/storyline.md maps audience to a default slide count.
2. Draft the storyline per references/storyline.md — emit the brief block + numbered slides block, pick a frame, tag each row with role and act, write claim-style titles.
3. Pick layouts per references/layouts.md. For bespoke shapes (timelines, funnels, infographics) clone from <brand>/snippets.yaml — see references/clones.md for the text-anchor recipe.
4. Approval gate — show storyline + chosen layouts, ask "ok?". Don't render until approved.
5. Render with the Quick Start snippet. Respect the verbosity tier when sizing fills. See references/gotchas.md for pitfalls.
6. Verify and loop — convert to PDF and read the pages against the defect classes in references/verify.md. Fix and re-render until clean; the reference describes the /loop-driven iteration.