v2.3.0

MINOR release. Retires the synthesis auto-generators in favour of
AI-direct authoring: the AI writes synthesis/paper.typ /
slides.typ / poster.typ / essay.typ / dashboard.html directly,
following the matching synthesis protocol. Tools validate and
compile; they no longer generate the prose / layout. The previous
auto-generators produced rigid, low-quality output — a 3MB
monolithic dashboard, a markdown-only paper intermediate, slide
decks no audience could read. Removing them moved 9700+ lines of
generator code out of the codebase and let the synthesis protocols
become true scaffolds (per docs/PROTOCOL_DOCTRINE.md).

Breaking changes

The following tools were removed. Each returns a _REMOVED_TOOLS
redirect message naming the new protocol + surviving tools:

• tool_synthesize → follow synthesis/synthesis_paper; write
  synthesis/paper.typ directly; compile via tool_typst_compile.
• tool_dashboard (+ 7 operations: create, story_generate,
  story_edit, story_quality_bar, reviewer_sim, test_generate,
  test_run) → follow synthesis/synthesis_dashboard; write
  synthesis/dashboard.html directly.
• tool_slides_create → follow synthesis/synthesis_slides; write
  synthesis/slides.typ (Touying); compile via tool_typst_compile.
• tool_poster_create → follow synthesis/synthesis_poster
  (redirect to synthesis/printable); write synthesis/poster.typ.
• tool_humanities_essay_scaffold → use
  tool_synthesis_scaffold(kind='essay') + author content.
• tool_paper_compile_typst → use tool_typst_compile (generic .typ
  → .pdf; the AI authors the .typ directly, no markdown
  intermediate).
• tool_section_substantiveness → folded into
  tool_synthesis_check(mode='substantiveness') (now also handles
  Typst headings).
• tool_figure dispatcher and operations caption_synthesise,
  interactive_autogen, paper_autoembed → the AI authors plain-
  English figure summaries, interactive companions, and Typst
  #figure(...) blocks directly when writing the plotting script or
  paper.typ. tool_figure_palette is now a top-level tool.
• tool_reviewer operation simulate → the AI walks the paper
  through the persona YAMLs in assets/reviewer_personas/ directly
  (tool_reviewer keeps response, rebuttal, compile for real
  external reviews).

The autopilot floor gate enforcement also shifted: tool_typst_compile
replaces tool_synthesize / tool_dashboard(operation='create') as
the final-deliverable gate.

Added

• tool_typst_compile — generic Typst compiler. Takes any
  AI-authored .typ source (paper, slides, poster, essay,
  cover_letter, response_to_reviewers) and renders the PDF.
  Resolves bundled venue templates from _typst_templates/;
  auto-generates synthesis/biblio.yml from workspace/citations.md
  when missing. Returns pdf_path, page_count, citation_count,
  typst_warnings, typst_errors.
• tool_synthesis_check — quality audit for AI-authored
  synthesis files. Auto-detects file type from the path. Modes:
  all (default), substantiveness, structure, accessibility,
  cliches. Per-IMRAD-section content depth audits for paper /
  essay; slide-count + speaker-notes + path-leak audits for slides;
  section + headline + QR audits for poster; engineering invariants
  (offline, alt-text, semantic <section id>, no placeholders, no
  filesystem-path leaks) for dashboard.
• tool_synthesis_scaffold — writes a <=80-line skeleton
  synthesis/<paper|slides|poster|essay>.typ or dashboard.html
  with section headers + // AI: author this section markers.
  Idempotent (refuses overwrite without overwrite=true).
• tool_figure_palette — promoted from an operation under
  tool_figure to a top-level tool. Returns CVD-safe palettes
  (Okabe-Ito qualitative, viridis sequential, PuOr diverging,
  accent).

Improved

• Synthesis protocols rewritten as scaffolds. synthesis_paper,
  synthesis_dashboard, synthesis_slides, printable (poster +
  handout), humanities_essay_structure, synthesis_grant,
  synthesis_abstract, synthesis_report, synthesis_lay_summary,
  synthesis_progress_update, synthesis_from_inputs — each
  collapsed from 100-370 lines of prescriptive recipe to <=130 lines
  of scaffold (design principles + quality standards + workflow +
  available tools). Spec files (synthesis_spec.yaml,
  slides_spec.yaml, dashboard_spec.yaml) are no longer required.
• Cleaner synthesis/ folder. After a full project run:
  paper.typ, paper.pdf, slides.typ, slides.pdf, poster.typ,
  poster.pdf, dashboard.html, biblio.yml, figures/. No
  intermediate .md files, no spec YAMLs, no handout duplicates.
• researcher_config.yaml schema simplified. The synthesis:
  block is empty by default. Removed knobs:
  figures_auto_embed*, figure_xref_rewrite, slide_engine,
  slide_template, slide_theme, slide_speaker_notes_enabled,
  slide_print_handout, poster_engine, poster_template,
  poster_theme, poster_qr_url, poster_handout_pdf,
  drafter_loop_* (5 knobs).
• _router_index.yaml v21. Synthesis decompositions point at
  the new tool_synthesize_plan → tool_synthesis_scaffold →
  tool_synthesis_check → tool_typst_compile chain.

Removed

• 9 implementation files under src/research_os/tools/actions/synthesis/:
  dashboard.py (1604 lines), dashboard_app.py (1424), slides.py
  (946), drafter_loop.py (850), reviewer.py (partial — reviewer_simulate),
  figure_auto_embed.py (747), poster_typst.py (697),
  dashboard_humanities.py (465), dashboard_qualitative.py (455),
  humanities_essay.py (212), synthesize.py (1374),
  dashboard_story.py (300). Total: ~9700 lines.
• src/research_os/tools/actions/viz/dashboard_tests.py (the
  Playwright scaffold for auto-generated dashboards).
• src/research_os/assets/reveal/ (260 KB), slide_templates/
  (24 KB), poster_templates/ (20 KB) — vendored assets only
  the removed generators consumed.
• 12 obsolete test files (test_v191_dashboard_app,
  test_v190_dashboard_content, test_dashboard_humanities,
  test_dashboard_qualitative, test_v191_story_mode,
  test_slides_engine, test_poster_typst, test_drafter_loop,
  test_figure_auto_embed, test_humanities_essay_structure,
  test_synthesize_auto_proceed,
  test_synthesize_blocks_on_unresolved_findings,
  test_synthesize_uses_pack_sections, test_paper_drafter_loop,
  test_researcher_config_synthesis,
  test_audit_audit_figure_coverage,
  test_citation_retrieval_empty_response,
  test_audit_findings_explain).

Migration

Existing project files (synthesis/paper.md, synthesis/dashboard.html
from prior versions) are preserved as-is on disk. The new tools do
not regenerate them. To produce the new artefact next to the old:
ask the AI to follow the matching synthesis protocol (e.g. "redo the
paper as Typst") — it will author synthesis/paper.typ and you can
delete the old paper.md once you're happy with the new PDF.

Tool count: 148 → 144 (8 removed + 4 added). Protocol count
unchanged at 117 core.

Bumped

• pyproject.toml, src/research_os/__init__.py, CITATION.cff
  to 2.3.0.
• 11 rewritten synthesis-related protocols to version: '2.3.0'.
• _router_index.yaml to version: 21.

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