Obsidian Course Vault (NUAA)

Use this skill to build a long-term Obsidian course knowledge base from NUAA VOD extractions.

Assume commands run from this skill root.

Core Boundary

• Scripts handle vault structure, file writes, index maintenance, and replay-to-vault bridging.
• The agent handles note writing, concept extraction, affairs review, and graph curation.
• Deterministic seed notes must not masquerade as finished course notes.
• A lesson without a finished note.md stays in 待整理回放.md, not in 已整理课次.md.

Main Commands

Initialize a new vault:

python scripts\init_obsidian_course_vault.py --vault-dir "<vault-dir>"

Add a course:

python scripts\add_course.py --vault-dir "<vault-dir>" --course-name "<课程名>"

Sync NUAA VOD extraction into the vault:

python scripts\sync_nuaa_course.py --vault-dir "<vault-dir>" --course-name "<课程名>" --vod-output-dir "<vod-output-dir>"

The sync script reads course.json, replay_inventory.json, and each lesson's note.md from the VOD output, then refreshes course trackers and copies finished notes into the vault.

Workflow

1. Initialize the vault (once)

python scripts\init_obsidian_course_vault.py --vault-dir "D:\Obsidian\NUAA-Courses"

Creates the standard Obsidian vault structure with templates and admin pages.

2. Add a course

python scripts\add_course.py --vault-dir "D:\Obsidian\NUAA-Courses" --course-name "操作系统"

3. Extract and write notes

Use nuaa-vod-summarizer to extract lessons, then write note.md for each finished lesson.

4. Sync into the vault

python scripts\sync_nuaa_course.py --vault-dir "D:\Obsidian\NUAA-Courses" --course-name "操作系统" --vod-output-dir "..\nuaa-vod-summarizer\work\118467"

This updates:

• 00-课程总览.md — course metadata and lesson index
• 已整理课次.md — table of finished lessons with concept counts
• 待整理回放.md — list of lessons still pending notes
• 事务.md — aggregated homework/exam/notice entries from finished notes
• Lesson note files — copied into 01-Courses/<课程名>/课次/

Required Replay Diagnosis

Before syncing any lesson note, classify each lesson into exactly one of:

1. waiting_transcript — subtitles not yet available
2. partial_transcript — subtitle exists but incomplete or garbled
3. transcript_only — has transcript but no note yet

This classification is produced by nuaa-vod-summarizer. Downstream vault sync must consume this classification — do not copy placeholder or diagnostic notes into the vault as finished content.

Course Affairs Workflow

Course affairs (homework, exams, scheduling) follow a careful pipeline:

1. Finished notes write affairs under ## 课程事务 with categories: homework, exams, course arrangements, notices.
2. sync_nuaa_course.py extracts affairs from finished notes and writes candidates.
3. Agent review condenses candidates into 事务.md and Admin tables.
4. Only transcript-supported affairs as confident bullets; uncertain items go under "待核对".

Do NOT roll up affairs from:

• Lessons with waiting_transcript
• Lessons with partial_transcript
• Notes still pending semantic rebuild
• Draft notes not yet validated

Affairs review must explicitly reject: ordinary teaching content, general encouragement, repeated mentions of the same item, vague notes without deliverables, and keyword hits that do not indicate actual affairs.

Authoring Contract

When writing notes for vault integration, follow the same authoring contract as nuaa-vod-summarizer:

• Face the student reader directly. No process commentary.
• Read full transcript before writing.
• Every major time block explains the teaching move.
• Capture exams, deadlines, stressed points, formulas, definitions, common mistakes.
• Weak evidence goes under "待核对".
• Do not expose ASR fragments, OCR snippets, or workflow notes.

Final Note Quality Gate

A lesson is not finished if it contains:

• Raw ASR/OCR snippets
• Generic headings like "课堂讲解与主题推进 1"
• Repeated generic advice across sections
• Misrecognized math symbols copied without correction
• Diagnostic markers treated as formal notes

For math-heavy courses, the note must reconstruct concrete mathematical objects, equations, proofs, and examples, or remain a draft.

Course-Domain Reconstruction Guidance

• Math and statistics: reconstruct objects, definitions, assumptions, equations, theorems, proof ideas, examples, counterexamples, symbol meanings.
• Engineering and computer science: reconstruct system components, algorithms, design constraints, implementation steps, trade-offs.
• Humanities and social sciences: reconstruct concepts, arguments, background, author positions, evidence, comparisons.
• Ideological and political courses: reconstruct policy concepts, theoretical claims, historical context, named documents/events, exam-oriented formulations.
• Language, writing, and communication courses: reconstruct vocabulary, rhetorical patterns, text structure, examples, correction points.
• Lab, design, or project courses: reconstruct task goals, deliverables, tools, operation steps, grading criteria.

Output Rules

• Public outputs are ONLY finished products. Internal artifacts stay out of the vault.
• Never link internal artifacts from public outputs.
• User-facing placeholder text must avoid process language like "agent review" or "semantic rebuild".
• Keep concept links in note body, not just frontmatter.
• Keep visible time references in HH:MM:SS format.
• Math stays in $...$ or $$...$$.
• Do not create concept pages from low-quality snippets.
• Do not add rejected or draft notes to trackers or graph growth.

Vault Structure

vault/
  00-Home.md
  01-Courses/
    <课程名>/
      00-课程总览.md
      事务.md
      已整理课次.md
      待整理回放.md
      回放同步.md
      章节完成度.md
      待回看问题.md
      课次/
        2026-03-09 操作系统 第2节.md
        ...
  02-Concepts/
    <课程名>/
      <课程名>概念图谱.md
  03-Admin/
    作业总表.md
    考试与通知.md
  04-Templates/
  05-Inbox/

Course Identity Rule

Course title — not course_id, lecturer, schedule, or classroom — determines identity. Multiple source URLs can feed the same titled course as long as provenance is preserved in sync metadata.

Failure Rules

• Never create a vault inside nuaa-vod-summarizer/work/ — vaults are long-lived, work dirs are ephemeral.
• If note.md doesn't exist for a lesson, mark it in 待整理回放 rather than inventing content.
• Do not overwrite an existing note.md during sync unless --force is passed.
• Course affairs in 事务.md must come from actual note content, not from transcript keyword extraction.
• Empty or near-empty transcripts count as waiting_transcript — do not build placeholder notes.
• Partial transcripts get only diagnostic drafts, not final notes.

Integration with nuaa-vod-summarizer

The bridge is the course.json + replay_inventory.json + per-lesson note.md:

vod-output-dir/
  course.json              ← course identity
  replay_inventory.json    ← full lesson list
  lessons/<id>/
    metadata.json          ← lesson metadata
    note.md                ← finished Markdown note (the source of truth)

Only lessons with note.md present and non-empty are treated as "finished" and synced into the vault.