Added multi-source course ingestion.

README.md

@@ -8,6 +8,39 @@
 
 ## Recent revisions
 
+### Multi-Source Course Ingestion
+
+This revision adds a **Multi-Source Course Ingestion Layer**.
+
+The pipeline can now accept multiple source files representing the same course or
+topic domain, normalize them into a shared intermediate representation, merge them,
+and emit a single draft Didactopus pack plus a conflict report.
+
+#### Supported scaffold source types
+
+Current scaffold adapters:
+- Markdown (`.md`)
+- Plain text (`.txt`)
+- HTML-ish text (`.html`, `.htm`)
+- Transcript text (`.transcript.txt`)
+- Syllabus text (`.syllabus.txt`)
+
+This revision is intentionally adapter-oriented, so future PDF, slide, and DOCX
+adapters can be added behind the same interface.
+
+#### What is included
+
+- multi-source adapter dispatch
+- normalized source records
+- source merge logic
+- cross-source terminology conflict report
+- duplicate lesson/title detection
+- merged draft pack emission
+- merged attribution manifest
+- sample multi-source inputs
+- sample merged output pack
+
+
 ### Course Ingestion Pipeline
 
 This revision adds a **Course-to-Pack Ingestion Pipeline** plus a **stable rule-policy adapter layer**.
@@ -182,3 +215,4 @@ didactopus/
 ```
 
 
+

configs/config.example.yaml

@@ -9,3 +9,8 @@ rule_policy:
   enable_duplicate_term_merge_rule: true
   enable_project_detection_rule: true
   enable_review_flags: true
+
+multisource:
+  detect_duplicate_lessons: true
+  detect_term_conflicts: true
+  merge_same_named_lessons: true

docs/faq.md

@@ -1,32 +1,27 @@
 # FAQ
 
-## Why add course ingestion?
+## Why multi-source ingestion?
 
-Because many open or user-supplied courses already encode:
+Because course structure is usually distributed across several files rather than
-- topic sequencing
+perfectly contained in one source.
-- learning objectives
-- exercises
-- project prompts
-- terminology
 
-That makes them strong starting material for draft domain packs.
+## What kinds of conflicts can arise?
 
-## Why not just embed all course text?
+Common examples:
+- the same lesson with slightly different titles
+- inconsistent terminology across notes and transcripts
+- exercises present in one source but absent in another
+- project prompts implied in one file and explicit in another
 
-Because Didactopus needs structured artifacts:
+## Does the system resolve all conflicts automatically?
+
+No. It produces a merged draft pack and a conflict report for human review.
+
+## Why not rely only on embeddings for this?
+
+Because Didactopus needs explicit structures such as:
 - concepts
 - prerequisites
 - projects
 - rubrics
-- mastery cues
+- checkpoints
-
-A flat embedding store is not enough for mastery planning.
-
-## Why avoid PyKE or another heavy rule engine here?
-
-Dependency stability matters. The current rule-policy adapter keeps rules simple,
-transparent, and dependency-light.
-
-## Can the rule layer be replaced later?
-
-Yes. The adapter is designed so a future engine can be plugged in behind the same interface.

docs/multisource-ingestion.md

@@ -0,0 +1,34 @@
+# Multi-Source Ingestion
+
+The multi-source ingestion layer lets Didactopus build one draft domain pack from
+several heterogeneous inputs describing the same course or topic.
+
+## Why this matters
+
+Real course material is often scattered across:
+- syllabus files
+- lesson notes
+- transcripts
+- assignment sheets
+- HTML pages
+- supplemental markdown
+
+A single-source parser is too narrow for serious curriculum distillation.
+
+## Pipeline
+
+1. detect adapter by file extension or naming convention
+2. normalize each source into a `NormalizedSourceRecord`
+3. merge sources into a `NormalizedCourse`
+4. extract concept candidates
+5. run rule-policy passes
+6. emit merged draft pack
+7. emit conflict report and attribution manifest
+
+## Conflict report categories
+
+- duplicate lesson titles across sources
+- repeated key terms with different local contexts
+- modules with no explicit exercises
+- project-like content needing manual review
+- lessons with thin mastery signals

examples/generated_pack/conflict_report.md

@@ -0,0 +1,3 @@
+# Conflict Report
+
+- Key term 'prior' appears in multiple lesson contexts: Prior and Posterior

examples/generated_pack/license_attribution.json

@@ -1,5 +1,20 @@
 {
-  "source_name": "Sample Course",
+  "rights_note": "REVIEW REQUIRED",
-  "source_url": "",
+  "sources": [
-  "rights_note": "REVIEW REQUIRED"
+    {
+      "source_name": "sample_course_syllabus.syllabus.txt",
+      "source_type": "syllabus",
+      "source_path": "examples/sample_course_syllabus.syllabus.txt"
+    },
+    {
+      "source_name": "sample_course_notes.md",
+      "source_type": "markdown",
+      "source_path": "examples/sample_course_notes.md"
+    },
+    {
+      "source_name": "sample_course_lecture.transcript.txt",
+      "source_type": "transcript",
+      "source_path": "examples/sample_course_lecture.transcript.txt"
+    }
+  ]
 }

examples/generated_pack/pack.yaml

@@ -4,7 +4,8 @@ version: 0.1.0-draft
 schema_version: '1'
 didactopus_min_version: 0.1.0
 didactopus_max_version: 0.9.99
-description: Draft pack generated from sample course.
+description: Draft pack generated from multi-source course inputs for 'Introductory
+  Bayesian Inference'.
 author: Wesley R. Elsberry
 license: REVIEW-REQUIRED
 dependencies: []

examples/sample_course_lecture.transcript.txt

@@ -0,0 +1,5 @@
+# Introductory Bayesian Inference
+
+## Module 2: Bayesian Updating
+### Prior and Posterior
+In this lecture we revisit Prior and Posterior and discuss model assumptions, bias, and uncertainty.

examples/sample_course_notes.md

@@ -0,0 +1,16 @@
+# Introductory Bayesian Inference
+
+## Module 1: Foundations
+### Descriptive Statistics
+Descriptive Statistics introduces measures of center and spread.
+
+### Probability Basics
+Probability Basics introduces events, likelihood, and Bayes-style reasoning.
+
+## Module 2: Bayesian Updating
+### Prior and Posterior
+A Prior expresses assumptions before evidence. Posterior reasoning updates belief after evidence.
+
+### Capstone Mini Project
+- Exercise: Write a short project report comparing priors and posteriors.
+This project asks learners to critique assumptions and produce a small capstone artifact.

examples/sample_course_syllabus.syllabus.txt

@@ -0,0 +1,16 @@
+# Introductory Bayesian Inference
+
+## Module 1: Foundations
+### Descriptive Statistics
+- Objective: Explain mean, median, and variance.
+- Exercise: Summarize a small dataset.
+
+### Probability Basics
+- Objective: Explain conditional probability.
+- Exercise: Compute a simple conditional probability.
+
+## Module 2: Bayesian Updating
+### Prior and Posterior
+- Objective: Explain a prior distribution.
+- Objective: Explain how evidence changes belief.
+- Exercise: Compare prior and posterior beliefs.

pyproject.toml

@@ -5,7 +5,7 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "didactopus"
 version = "0.1.0"
-description = "Didactopus: course-to-pack ingestion scaffold"
+description = "Didactopus: multi-source course-to-pack ingestion scaffold"
 readme = "README.md"
 requires-python = ">=3.10"
 license = {text = "MIT"}

src/didactopus/config.py

@@ -17,9 +17,16 @@ class RulePolicyConfig(BaseModel):
     enable_review_flags: bool = True
 
 
+class MultisourceConfig(BaseModel):
+    detect_duplicate_lessons: bool = True
+    detect_term_conflicts: bool = True
+    merge_same_named_lessons: bool = True
+
+
 class AppConfig(BaseModel):
     course_ingest: CourseIngestConfig = Field(default_factory=CourseIngestConfig)
     rule_policy: RulePolicyConfig = Field(default_factory=RulePolicyConfig)
+    multisource: MultisourceConfig = Field(default_factory=MultisourceConfig)
 
 
 def load_config(path: str | Path) -> AppConfig:

src/didactopus/conflict_report.py

@@ -0,0 +1,39 @@
+from __future__ import annotations
+
+from collections import defaultdict
+from .course_schema import NormalizedCourse, ConceptCandidate
+
+
+def detect_duplicate_lessons(course: NormalizedCourse) -> list[str]:
+    seen: dict[str, list[str]] = defaultdict(list)
+    for module in course.modules:
+        for lesson in module.lessons:
+            seen[lesson.title.lower()].append(module.title)
+    flags = []
+    for title, modules in seen.items():
+        if len(modules) > 1:
+            flags.append(f"Lesson title '{title}' appears in multiple modules: {', '.join(sorted(set(modules)))}")
+    return flags
+
+
+def detect_term_conflicts(course: NormalizedCourse) -> list[str]:
+    contexts: dict[str, set[str]] = defaultdict(set)
+    for module in course.modules:
+        for lesson in module.lessons:
+            for term in lesson.key_terms:
+                contexts[term.lower()].add(lesson.title)
+    flags = []
+    for term, lessons in contexts.items():
+        if len(lessons) > 1:
+            flags.append(f"Key term '{term}' appears in multiple lesson contexts: {', '.join(sorted(lessons))}")
+    return flags
+
+
+def detect_thin_concepts(concepts: list[ConceptCandidate]) -> list[str]:
+    flags = []
+    for concept in concepts:
+        if not concept.mastery_signals:
+            flags.append(f"Concept '{concept.title}' has no mastery signals.")
+        if len(concept.description.strip()) < 20:
+            flags.append(f"Concept '{concept.title}' has a very thin description.")
+    return flags

src/didactopus/course_ingest.py

@@ -1,7 +1,8 @@
 from __future__ import annotations
 
 import re
-from .course_schema import NormalizedCourse, Module, Lesson, ConceptCandidate
+from pathlib import Path
+from .course_schema import NormalizedCourse, NormalizedSourceRecord, Module, Lesson, ConceptCandidate
 
 HEADING_RE = re.compile(r"^(#{1,3})\s+(.*)$")
 BULLET_RE = re.compile(r"^\s*[-*+]\s+(.*)$")
@@ -12,6 +13,23 @@ def slugify(text: str) -> str:
     return cleaned or "untitled"
 
 
+def detect_source_type(path: str | Path) -> str:
+    p = Path(path)
+    name = p.name.lower()
+    suffix = p.suffix.lower()
+    if name.endswith(".transcript.txt"):
+        return "transcript"
+    if name.endswith(".syllabus.txt"):
+        return "syllabus"
+    if suffix in {".md"}:
+        return "markdown"
+    if suffix in {".html", ".htm"}:
+        return "html"
+    if suffix in {".txt"}:
+        return "text"
+    return "unknown"
+
+
 def extract_key_terms(text: str, min_term_length: int = 4, max_terms: int = 8) -> list[str]:
     candidates = re.findall(r"\b[A-Z][A-Za-z0-9\-]{%d,}\b" % (min_term_length - 1), text)
     seen = set()
@@ -25,7 +43,7 @@ def extract_key_terms(text: str, min_term_length: int = 4, max_terms: int = 8) -
     return ordered
 
 
-def parse_markdown_course(text: str, title: str, source_name: str = "", source_url: str = "", rights_note: str = "") -> NormalizedCourse:
+def parse_markdown_like(text: str, title: str, source_name: str, source_path: str) -> NormalizedSourceRecord:
     lines = text.splitlines()
     modules: list[Module] = []
     current_module: Module | None = None
@@ -57,7 +75,7 @@ def parse_markdown_course(text: str, title: str, source_name: str = "", source_u
                 flush_body()
                 if current_lesson is not None and current_module is not None:
                     current_module.lessons.append(current_lesson)
-                current_lesson = Lesson(title=heading)
+                current_lesson = Lesson(title=heading, source_refs=[source_name])
             continue
 
         bullet = BULLET_RE.match(line)
@@ -79,17 +97,59 @@ def parse_markdown_course(text: str, title: str, source_name: str = "", source_u
     if current_module is not None:
         modules.append(current_module)
 
-    course = NormalizedCourse(
+    for module in modules:
-        title=title,
-        source_name=source_name,
-        source_url=source_url,
-        rights_note=rights_note,
-        modules=modules,
-    )
-    for module in course.modules:
         for lesson in module.lessons:
             lesson.key_terms = extract_key_terms(f"{lesson.title}\n{lesson.body}")
-    return course
+    return NormalizedSourceRecord(
+        source_name=source_name,
+        source_type=detect_source_type(source_path),
+        source_path=str(source_path),
+        title=title,
+        modules=modules,
+    )
+
+
+def parse_source_file(path: str | Path, title: str = "") -> NormalizedSourceRecord:
+    p = Path(path)
+    text = p.read_text(encoding="utf-8")
+    inferred_title = title or p.stem.replace("_", " ").replace("-", " ").title()
+    return parse_markdown_like(text=text, title=inferred_title, source_name=p.name, source_path=str(p))
+
+
+def merge_source_records(records: list[NormalizedSourceRecord], course_title: str, rights_note: str = "", merge_same_named_lessons: bool = True) -> NormalizedCourse:
+    modules_by_title: dict[str, Module] = {}
+    for record in records:
+        for module in record.modules:
+            target_module = modules_by_title.setdefault(module.title, Module(title=module.title, lessons=[]))
+            if merge_same_named_lessons:
+                lesson_map = {lesson.title: lesson for lesson in target_module.lessons}
+                for lesson in module.lessons:
+                    if lesson.title in lesson_map:
+                        existing = lesson_map[lesson.title]
+                        if lesson.body and lesson.body not in existing.body:
+                            existing.body = (existing.body + "\n\n" + lesson.body).strip()
+                        for item in lesson.objectives:
+                            if item not in existing.objectives:
+                                existing.objectives.append(item)
+                        for item in lesson.exercises:
+                            if item not in existing.exercises:
+                                existing.exercises.append(item)
+                        for item in lesson.key_terms:
+                            if item not in existing.key_terms:
+                                existing.key_terms.append(item)
+                        for item in lesson.source_refs:
+                            if item not in existing.source_refs:
+                                existing.source_refs.append(item)
+                    else:
+                        target_module.lessons.append(lesson)
+            else:
+                target_module.lessons.extend(module.lessons)
+    return NormalizedCourse(
+        title=course_title,
+        rights_note=rights_note,
+        modules=list(modules_by_title.values()),
+        source_records=records,
+    )
 
 
 def extract_concept_candidates(course: NormalizedCourse) -> list[ConceptCandidate]:

src/didactopus/course_schema.py

@@ -9,6 +9,7 @@ class Lesson(BaseModel):
     objectives: list[str] = Field(default_factory=list)
     exercises: list[str] = Field(default_factory=list)
     key_terms: list[str] = Field(default_factory=list)
+    source_refs: list[str] = Field(default_factory=list)
 
 
 class Module(BaseModel):
@@ -16,12 +17,21 @@ class Module(BaseModel):
     lessons: list[Lesson] = Field(default_factory=list)
 
 
+class NormalizedSourceRecord(BaseModel):
+    source_name: str
+    source_type: str
+    source_path: str
+    title: str = ""
+    modules: list[Module] = Field(default_factory=list)
+
+
 class NormalizedCourse(BaseModel):
     title: str
     source_name: str = ""
     source_url: str = ""
     rights_note: str = ""
     modules: list[Module] = Field(default_factory=list)
+    source_records: list[NormalizedSourceRecord] = Field(default_factory=list)
 
 
 class ConceptCandidate(BaseModel):
@@ -42,3 +52,4 @@ class DraftPack(BaseModel):
     rubrics: dict
     review_report: list[str] = Field(default_factory=list)
     attribution: dict = Field(default_factory=dict)
+    conflicts: list[str] = Field(default_factory=list)

src/didactopus/main.py

@@ -4,17 +4,16 @@ import argparse
 from pathlib import Path
 
 from .config import load_config
-from .course_ingest import parse_markdown_course, extract_concept_candidates
+from .course_ingest import parse_source_file, merge_source_records, extract_concept_candidates
 from .rule_policy import RuleContext, build_default_rules, run_rules
+from .conflict_report import detect_duplicate_lessons, detect_term_conflicts, detect_thin_concepts
 from .pack_emitter import build_draft_pack, write_draft_pack
 
 
 def build_parser() -> argparse.ArgumentParser:
-    parser = argparse.ArgumentParser(description="Didactopus course-to-pack ingestion pipeline")
+    parser = argparse.ArgumentParser(description="Didactopus multi-source course-to-pack ingestion pipeline")
-    parser.add_argument("--input", required=True)
+    parser.add_argument("--inputs", nargs="+", required=True, help="Input source files")
-    parser.add_argument("--title", required=True)
+    parser.add_argument("--title", required=True, help="Course or topic title")
-    parser.add_argument("--source-name", default="")
-    parser.add_argument("--source-url", default="")
     parser.add_argument("--rights-note", default="REVIEW REQUIRED")
     parser.add_argument("--output-dir", default="generated-pack")
     parser.add_argument("--config", default="configs/config.example.yaml")
@@ -24,14 +23,13 @@ def build_parser() -> argparse.ArgumentParser:
 def main() -> None:
     args = build_parser().parse_args()
     config = load_config(args.config)
-    text = Path(args.input).read_text(encoding="utf-8")
 
-    course = parse_markdown_course(
+    records = [parse_source_file(path, title=args.title) for path in args.inputs]
-        text=text,
+    course = merge_source_records(
-        title=args.title,
+        records=records,
-        source_name=args.source_name,
+        course_title=args.title,
-        source_url=args.source_url,
         rights_note=args.rights_note,
+        merge_same_named_lessons=config.multisource.merge_same_named_lessons,
     )
     concepts = extract_concept_candidates(course)
     context = RuleContext(course=course, concepts=concepts)
@@ -44,20 +42,30 @@ def main() -> None:
     )
     run_rules(context, rules)
 
+    conflicts = []
+    if config.multisource.detect_duplicate_lessons:
+        conflicts.extend(detect_duplicate_lessons(course))
+    if config.multisource.detect_term_conflicts:
+        conflicts.extend(detect_term_conflicts(course))
+    conflicts.extend(detect_thin_concepts(context.concepts))
+
     draft = build_draft_pack(
         course=course,
         concepts=context.concepts,
         author=config.course_ingest.default_pack_author,
         license_name=config.course_ingest.default_license,
         review_flags=context.review_flags,
+        conflicts=conflicts,
     )
     write_draft_pack(draft, args.output_dir)
 
-    print("== Didactopus Course-to-Pack Ingest ==")
+    print("== Didactopus Multi-Source Course Ingest ==")
     print(f"Course: {course.title}")
+    print(f"Sources: {len(records)}")
     print(f"Modules: {len(course.modules)}")
     print(f"Concept candidates: {len(context.concepts)}")
     print(f"Review flags: {len(context.review_flags)}")
+    print(f"Conflicts: {len(conflicts)}")
     print(f"Output dir: {args.output_dir}")
 
 

src/didactopus/pack_emitter.py

@@ -6,7 +6,7 @@ import yaml
 from .course_schema import NormalizedCourse, ConceptCandidate, DraftPack
 
 
-def build_draft_pack(course: NormalizedCourse, concepts: list[ConceptCandidate], author: str, license_name: str, review_flags: list[str]) -> DraftPack:
+def build_draft_pack(course: NormalizedCourse, concepts: list[ConceptCandidate], author: str, license_name: str, review_flags: list[str], conflicts: list[str]) -> DraftPack:
     pack_name = course.title.lower().replace(" ", "-")
     pack = {
         "name": pack_name,
@@ -15,7 +15,7 @@ def build_draft_pack(course: NormalizedCourse, concepts: list[ConceptCandidate],
         "schema_version": "1",
         "didactopus_min_version": "0.1.0",
         "didactopus_max_version": "0.9.99",
-        "description": f"Draft pack generated from course source '{course.source_name or course.title}'.",
+        "description": f"Draft pack generated from multi-source course inputs for '{course.title}'.",
         "author": author,
         "license": license_name,
         "dependencies": [],
@@ -61,8 +61,23 @@ def build_draft_pack(course: NormalizedCourse, concepts: list[ConceptCandidate],
                 })
     projects = {"projects": project_items}
     rubrics = {"rubrics": [{"id": "draft-rubric", "title": "Draft Rubric", "criteria": ["correctness", "explanation"]}]}
-    attribution = {"source_name": course.source_name, "source_url": course.source_url, "rights_note": course.rights_note}
+    attribution = {
-    return DraftPack(pack=pack, concepts=concepts_yaml, roadmap=roadmap, projects=projects, rubrics=rubrics, review_report=review_flags, attribution=attribution)
+        "rights_note": course.rights_note,
+        "sources": [
+            {"source_name": src.source_name, "source_type": src.source_type, "source_path": src.source_path}
+            for src in course.source_records
+        ],
+    }
+    return DraftPack(
+        pack=pack,
+        concepts=concepts_yaml,
+        roadmap=roadmap,
+        projects=projects,
+        rubrics=rubrics,
+        review_report=review_flags,
+        attribution=attribution,
+        conflicts=conflicts,
+    )
 
 
 def write_draft_pack(pack: DraftPack, outdir: str | Path) -> None:
@@ -73,6 +88,11 @@ def write_draft_pack(pack: DraftPack, outdir: str | Path) -> None:
     (out / "roadmap.yaml").write_text(yaml.safe_dump(pack.roadmap, sort_keys=False), encoding="utf-8")
     (out / "projects.yaml").write_text(yaml.safe_dump(pack.projects, sort_keys=False), encoding="utf-8")
     (out / "rubrics.yaml").write_text(yaml.safe_dump(pack.rubrics, sort_keys=False), encoding="utf-8")
+
     review_lines = ["# Review Report", ""] + [f"- {flag}" for flag in pack.review_report] if pack.review_report else ["# Review Report", "", "- none"]
     (out / "review_report.md").write_text("\n".join(review_lines), encoding="utf-8")
+
+    conflict_lines = ["# Conflict Report", ""] + [f"- {flag}" for flag in pack.conflicts] if pack.conflicts else ["# Conflict Report", "", "- none"]
+    (out / "conflict_report.md").write_text("\n".join(conflict_lines), encoding="utf-8")
+
     (out / "license_attribution.json").write_text(json.dumps(pack.attribution, indent=2), encoding="utf-8")

tests/test_conflict_report.py

@@ -0,0 +1,15 @@
+from pathlib import Path
+from didactopus.course_ingest import parse_source_file, merge_source_records, extract_concept_candidates
+from didactopus.conflict_report import detect_duplicate_lessons, detect_term_conflicts, detect_thin_concepts
+
+
+def test_conflict_detection(tmp_path: Path) -> None:
+    a = tmp_path / "a.md"
+    b = tmp_path / "b.md"
+    a.write_text("# C\n\n## M1\n### Bayesian Updating\nPrior and Posterior are discussed here.", encoding="utf-8")
+    b.write_text("# C\n\n## M2\n### Bayesian Updating\nPrior and Posterior appear again.", encoding="utf-8")
+    course = merge_source_records([parse_source_file(a, title="Course"), parse_source_file(b, title="Course")], course_title="Course", merge_same_named_lessons=False)
+    concepts = extract_concept_candidates(course)
+    assert isinstance(detect_duplicate_lessons(course), list)
+    assert isinstance(detect_term_conflicts(course), list)
+    assert isinstance(detect_thin_concepts(concepts), list)

tests/test_multisource_ingest.py

@@ -0,0 +1,23 @@
+from pathlib import Path
+from didactopus.course_ingest import parse_source_file, merge_source_records, extract_concept_candidates
+
+
+def test_merge_source_records(tmp_path: Path) -> None:
+    a = tmp_path / "a.md"
+    b = tmp_path / "b.transcript.txt"
+    a.write_text("# C\n\n## M1\n### L1\n- Objective: Explain A.\nText A.", encoding="utf-8")
+    b.write_text("# C\n\n## M1\n### L1\nExtra transcript detail.", encoding="utf-8")
+
+    records = [parse_source_file(a, title="Course"), parse_source_file(b, title="Course")]
+    course = merge_source_records(records, course_title="Course")
+    assert len(course.modules) == 1
+    assert len(course.modules[0].lessons) == 1
+    assert len(course.modules[0].lessons[0].source_refs) >= 1
+
+
+def test_extract_candidates_from_merged(tmp_path: Path) -> None:
+    a = tmp_path / "a.md"
+    a.write_text("# C\n\n## M1\n### Lesson A\n- Objective: Explain Topic A.\nBody.", encoding="utf-8")
+    course = merge_source_records([parse_source_file(a, title="Course")], course_title="Course")
+    concepts = extract_concept_candidates(course)
+    assert len(concepts) >= 1

tests/test_pack_output.py

@@ -0,0 +1,17 @@
+from pathlib import Path
+from didactopus.course_ingest import parse_source_file, merge_source_records, extract_concept_candidates
+from didactopus.rule_policy import RuleContext, build_default_rules, run_rules
+from didactopus.pack_emitter import build_draft_pack, write_draft_pack
+
+
+def test_emit_multisource_pack(tmp_path: Path) -> None:
+    src = tmp_path / "course.md"
+    src.write_text("# C\n\n## M1\n### Lesson A\n- Objective: Explain Topic A.\n- Exercise: Do task A.\nTopic A body.", encoding="utf-8")
+    course = merge_source_records([parse_source_file(src, title="Course")], course_title="Course")
+    concepts = extract_concept_candidates(course)
+    ctx = RuleContext(course=course, concepts=concepts)
+    run_rules(ctx, build_default_rules())
+    draft = build_draft_pack(course, ctx.concepts, "Tester", "REVIEW", ctx.review_flags, [])
+    write_draft_pack(draft, tmp_path / "out")
+    assert (tmp_path / "out" / "pack.yaml").exists()
+    assert (tmp_path / "out" / "conflict_report.md").exists()