=== BEGIN ARTIFACT FEATURE-Inline-Emphasis.md ===
# FEATURE: Inline Emphasis

| Field       | Value |
|-------------|-------|
| Version     | 20260815 V1 |
| Description | Parse CommonMark emphasis and strong emphasis using the delimiter-run algorithm. |
| Depends On  | ARCHITECTURE.md, FEATURE-Inline-Basics.md |
| Provides    | emphasis parsing, strong-emphasis parsing |
| Consumes    | executable commonmark, block structure, inline basics |

## Questions

- None.

## Purpose

Implement emphasis and strong emphasis after block parsing and basic inline tokenization.

## Behavior

- Apply the CommonMark delimiter-run algorithm for `*`, `_`, `**`, and `__`.
- Enforce intraword, Unicode whitespace, Unicode punctuation, and multiple-of-three rules.
- Support nested emphasis, strong emphasis, unmatched delimiters, and precedence with code spans, links, images, and HTML.
- Render emphasis as `<em>` and strong emphasis as `<strong>`.

## Programmatic Acceptance

=== AC emphasis-conformance ===
Intent: The implementation passes every supplied conformance example owned by emphasis and strong emphasis.
Suite: scoped

import subprocess
import sys

result = subprocess.run(
    [
        sys.executable,
        "sources/spec_tests.py",
        "--program",
        "./commonmark",
        "--spec",
        "sources/spec.txt",
        "--pattern",
        r"^Emphasis and strong emphasis$",
    ],
    capture_output=True,
    text=True,
)
print(result.stdout)
print(result.stderr, file=sys.stderr)
assert result.returncode == 0
=== END AC emphasis-conformance ===

## User Acceptance

- None.

## Guardrails

- Do not use a public Markdown implementation.
- Preserve block-before-inline parsing.
- Do not modify supplied conformance assets.

=== END ARTIFACT ===
=== BEGIN ARTIFACT FEATURE-Inline-Links-Images.md ===
# FEATURE: Inline Links and Images

| Field       | Value |
|-------------|-------|
| Version     | 20260815 V1 |
| Description | Parse CommonMark inline links, reference links, and images with destinations, titles, and label resolution. |
| Depends On  | ARCHITECTURE.md, FEATURE-Block-Leafs.md, FEATURE-Inline-Basics.md |
| Provides    | inline links, reference links, images |
| Consumes    | executable commonmark, link reference definitions, inline basics |

## Questions

- None.

## Purpose

Implement inline and reference links and images using the document-wide link reference map produced during block parsing.

## Behavior

- Parse inline links and images with empty or nonempty destinations and optional titles.
- Parse full-reference, collapsed-reference, and shortcut links and images.
- Normalize labels using case folding and whitespace normalization.
- Support escaped and balanced brackets, escaped destinations and titles, entity references, nested image descriptions, and first-definition precedence.
- Prevent links from containing links while preserving permitted nested image behavior.
- Render links with `<a>` and images with `<img>` using plain-text image alt content.

## Programmatic Acceptance

=== AC links-images-conformance ===
Intent: The implementation passes every supplied conformance example owned by links and images.
Suite: scoped

import subprocess
import sys

result = subprocess.run(
    [
        sys.executable,
        "sources/spec_tests.py",
        "--program",
        "./commonmark",
        "--spec",
        "sources/spec.txt",
        "--pattern",
        r"^(Links|Images)$",
    ],
    capture_output=True,
    text=True,
)
print(result.stdout)
print(result.stderr, file=sys.stderr)
assert result.returncode == 0
=== END AC links-images-conformance ===

## User Acceptance

- None.

## Guardrails

- Do not use a public Markdown implementation.
- Preserve document-wide reference-definition precedence.
- Do not modify supplied conformance assets.

=== END ARTIFACT ===
=== BEGIN ARTIFACT FEATURE-Inline-HTML-Autolinks.md ===
# FEATURE: Inline HTML and Autolinks

| Field       | Value |
|-------------|-------|
| Version     | 20260815 V1 |
| Description | Parse CommonMark URI autolinks, email autolinks, and raw HTML constructs. |
| Depends On  | ARCHITECTURE.md, FEATURE-Block-Leafs.md, FEATURE-Inline-Basics.md |
| Provides    | URI autolinks, email autolinks, raw HTML |
| Consumes    | executable commonmark, block structure, inline basics |

## Questions

- None.

## Purpose

Implement inline autolinks and raw HTML while preserving their precedence over ordinary text and emphasis.

## Behavior

- Parse absolute URI autolinks and valid email autolinks.
- Render URI autolinks as links to their URI and email autolinks with `mailto:` destinations.
- Recognize valid open and closing tags, comments, processing instructions, declarations, and CDATA sections.
- Preserve valid raw HTML without Markdown interpretation inside the raw construct.
- Reject malformed tags and autolinks as literal escaped text.
- Respect precedence with code spans, links, images, and emphasis.

## Programmatic Acceptance

=== AC html-autolinks-conformance ===
Intent: The implementation passes every supplied conformance example owned by autolinks and raw HTML.
Suite: scoped

import subprocess
import sys

result = subprocess.run(
    [
        sys.executable,
        "sources/spec_tests.py",
        "--program",
        "./commonmark",
        "--spec",
        "sources/spec.txt",
        "--pattern",
        r"^(Autolinks|Raw HTML)$",
    ],
    capture_output=True,
    text=True,
)
print(result.stdout)
print(result.stderr, file=sys.stderr)
assert result.returncode == 0
=== END AC html-autolinks-conformance ===

## User Acceptance

- None.

## Guardrails

- Do not use a public Markdown implementation.
- Preserve raw HTML exactly where the specification requires it.
- Do not modify supplied conformance assets.

=== END ARTIFACT ===
=== BEGIN ARTIFACT FEATURE-Conformance-Verification.md ===
# FEATURE: Conformance Verification

| Field       | Value |
|-------------|-------|
| Version     | 20260815 V1 |
| Description | Verify the completed parser against the complete supplied CommonMark 0.31.2 conformance suite. |
| Depends On  | ARCHITECTURE.md, FEATURE-Block-Leafs.md, FEATURE-Block-Quotes.md, FEATURE-Block-Lists.md, FEATURE-Inline-Basics.md, FEATURE-Inline-Emphasis.md, FEATURE-Inline-Links-Images.md, FEATURE-Inline-HTML-Autolinks.md |
| Provides    | complete CommonMark conformance verification |
| Consumes    | executable commonmark, all parser capabilities |

## Questions

- None.

## Purpose

Provide the terminal verification step for the completed command-line parser.

## Behavior

- Stage `spec.txt`, `spec_tests.py`, `cmark.py`, `normalize.py`, and `full_test.sh` unchanged.
- Run `sh sources/full_test.sh` from the completed application root.
- Treat the supplied scoring entry point's exit status as the verification result.
- Keep the suite unfiltered and terminal.

## Programmatic Acceptance

=== AC complete-conformance ===
Intent: The completed parser passes the complete unfiltered supplied CommonMark conformance suite.
Suite: full

import subprocess

result = subprocess.run(
    ["sh", "sources/full_test.sh"],
    capture_output=True,
    text=True,
)
print(result.stdout)
print(result.stderr, file=sys.stderr)
assert result.returncode == 0
=== END AC complete-conformance ===

## User Acceptance

- None.

## Guardrails

- This is the only full-suite acceptance check.
- Do not filter, skip, reinterpret, or modify the supplied scoring assets.
- Do not modify the supplied scoring entry point.

=== END ARTIFACT ===