Add parsers for the remaining PT9 interlinear files

[jasonleenaylor]

Parse Lexicon.xml, WordAnalyses.xml, and InterlinearSetup.xml into models that mirror the file shapes alongside the existing interlinear parser, as the first slice of the PT9 import pipeline:

• lexemeKey.ts holds the shared LexemeKeyData shape and pure helpers (parse/compose/equality) for PT9's Type:Form[:Homograph] id grammar, with homograph 1 omitted from composed ids and unknown type names preserved.
• lexiconXmlParser.ts parses entries (senses, per-language glosses) and the legacy Analyses section (wordform -> ordered lexeme keys, as a record matching how the interlinear parser represents Verses).
• wordAnalysesXmlParser.ts parses the wordform-to-parse inventory, keeping lexeme ids as raw composed strings.
• interlinearSetupXmlParser.ts parses per-language configuration fully leniently: every field optional, unknown type names kept as raw strings.

All parsers are identity-strict and otherwise preserve optional data as written: they throw only on a missing root, duplicate dictionary keys, or entries missing their identity; absent attributes and elements stay absent.

Grow pt9-xml.md into the four-file format reference with a shared conventions section, and add coherent test-data fixtures whose sense ids and lexeme keys resolve against Interlinear_en_MAT.xml.

🤖 Generated with Claude Code

---

This change is 

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on base/target branches other than the default branch.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 5a507599-189c-4ed6-8623-2c55d6947a31

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[imnasnainaec]

Looks good. Just a handful of minor readability/coverage things.

@imnasnainaec reviewed 5 files and all commit messages, and made 7 comments.
Reviewable status: 5 of 12 files reviewed, 6 unresolved discussions (waiting on jasonleenaylor).

---

src/__tests__/parsers/pt9/lexiconXmlParser.test.ts line 436 at r2 (raw file):
This throw test highlights a valid example missing from the first section of tests:

one side write Homograph="2" and the other omits it

---

src/parsers/pt9/interlinearSetupXmlParser.ts line 28 at r2 (raw file):

  /** Hex id of the model text, kept as the raw string. */
  MdlScrTextId?: string;
  MdlIsResource?: boolean;

❓ What sort of resource does MdlIsResource refer to?

---

src/parsers/pt9/interlinearSetupXmlParser.ts line 41 at r2 (raw file):

}

/** InterlinearSetup: type/language attributes plus text elements; empty parses as a bare string. */

I didn't see test coverage for "empty parses as bare string.

---

src/parsers/pt9/lexiconXmlParser.ts line 119 at r2 (raw file):

  const form = element['@_Form'];
  if (!type || form === undefined) {
    throw new SyntaxError('Invalid XML: Lexeme key missing Type or Form attribute');

❓ Why one common error for missing Type and/or Form?

---

src/parsers/pt9/pt9-xml.md line 159 at r2 (raw file):

- **Analyses**
  - **Children:** Zero or more `item` elements.
    - **`string`** (element text): Surface wordform. Required and non-empty; a missing or empty key causes a parse error, and duplicate wordforms cause a parse error.

⛏️ The "Required and non-empty" is information that elsewhere is more upfront, e.g. "(required, non-empty)", on other lines in these doc structures.

---

src/parsers/pt9/pt9-xml.md line 178 at r2 (raw file):

### Parsed output (in-memory)

Types exported from `src/parsers/pt9/lexiconXmlParser.ts`: **LexiconData** (`Language?`, `FontName?`, `FontSize?` as raw strings, `Entries`, `Analyses` as a record of wordform → `LexemeKeyData[]`, mirroring how string-keyed PT9 dictionaries parse elsewhere), **LexiconEntryData** (`Key` as a `LexemeKeyData`, `Senses`), **LexiconSenseData** (`Id?`, `Glosses`), **LexiconGlossData** (`Language?`, `Text`). `Entries` stays an array of key-carrying objects because its key is the non-string `LexemeKey`.

This would be more readable as a bulleted list. (Same for other "Parsed output" sections.)