feat(wow-cdbc): add JSON import support for DBC files

[danielsreichenbach]

Summary

• Add dbc import CLI subcommand: reads a JSON file + schema YAML and writes a valid WDBC-format DBC binary
• Add import_from_json to wow-cdbc library: builds a RecordSet from JSON with type coercion and string block deduplication
• Fix dbd_to_yaml binary to produce schemas compatible with the schema loader (type_name field, per-build layout, array sizes)
• Fix generate_yaml_schema in dbd.rs to omit key_field when no $id$ marker exists in the build definition
• Fix schema_loader::to_schema to return an error instead of panicking on unknown key field names

Usage

# 1. Convert a WoWDBDefs definition to a YAML schema
dbd_to_yaml Spell.dbd Spell.yaml

# 2. Export a DBC to JSON (existing command)
warcraft-rs dbc export --schema Spell.yaml --format json Spell.dbc --output Spell.json

# 3. Edit Spell.json as needed, then import back
warcraft-rs dbc import --schema Spell.yaml --output Spell_modified.dbc Spell.json

Test plan

• cargo test --workspace passes (all tests green, zero failures)
• cargo clippy --workspace --all-features passes (no warnings)
• Three new unit tests in export.rs: JSON round-trip, missing field error, type mismatch error
• Manual smoke test with real 3.3.5a AttackAnimTypes.dbc: validate → export → modify → import → validate

[codecov]

Codecov Report

❌ Patch coverage is 73.37884% with 156 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
file-formats/database/wow-cdbc/src/export.rs	69.89%	56 Missing ⚠️
...e-formats/database/wow-cdbc/src/bin/dbd_to_yaml.rs	0.00%	30 Missing ⚠️
warcraft-rs/src/commands/dbc.rs	0.00%	29 Missing ⚠️
file-formats/database/wow-cdbc/src/dbd.rs	90.79%	22 Missing ⚠️
...rmats/world-data/wow-adt/src/builder/validation.rs	61.53%	5 Missing ⚠️
warcraft-rs/src/commands/mpq.rs	0.00%	4 Missing ⚠️
file-formats/archives/wow-mpq/src/security.rs	95.94%	3 Missing ⚠️
...ile-formats/database/wow-cdbc/src/schema_loader.rs	0.00%	3 Missing ⚠️
file-formats/graphics/wow-wmo/src/converter.rs	0.00%	3 Missing ⚠️
warcraft-rs/src/commands/blp.rs	0.00%	1 Missing ⚠️

📢 Thoughts on this report? Let us know!

[SmashingQuasar]

Hey,

I tried to test this PR since I am the original requester.

I am quite struggling to be honest.
I built the software from source from this branch. I am told that the command dbd_to_yaml does not exist.
Because I do not want to pollute my machine with hundreds of crates nor any of the Rust environment since I do not develop in Rust, each test takes several minutes since cargo run somehow recompiles the software again.

Could you provide more detail on how to test this, please?

[SmashingQuasar]

So it turns out the command is dbd convert. Regardless, it does not work on my end.
I can't find how to specify which build I want to use for the conversion and when running cargon run dbd convert Achievement.dbd it produces a yaml which seems correct. However, I did try to extract my MPQs with it. When running the command dbc export it tells me the Achievement.dbc has 62 fields.

[danielsreichenbach]

1. Clone the definitions and the tool

git clone https://github.com/wowdev/WoWDBDefs.git
git clone https://github.com/wowemulation-dev/warcraft-rs.git
cd warcraft-rs

2. Build the CLI (release for speed)

cargo build --release -p warcraft-rs
BIN=./target/release/warcraft-rs

3. Convert one DBD to a YAML schema for your target build.

--version is a substring filter against BUILD lines (use the major.minor.patch).

$BIN dbd convert ../WoWDBDefs/definitions/Map.dbd \
    --version 3.3.5 \
    -o ./schemas

4. Export a DBC to JSON using that schema.

$BIN dbc export /path/to/your/dbc/Map.dbc \
    --schema ./schemas/Map_3_3_0_10958-3_3_5_12340.yaml \
    --format json \
    --output ./json/Map.json

Notes:

• The generated YAML filename is derived from the first build in the matched DBD group — it isn't always ..._12340.yaml. Just point --schema at whatever file
  dbd convert printed.
• Pick --version to match the client your DBCs came from: 1.12, 2.4.3, 3.3.5, 4.3.4, 5.4.8.
• For a bulk run, iterate over each *.dbc, look up the matching *.dbd in WoWDBDefs/definitions/ (case-insensitive), convert, then export.

[danielsreichenbach]

I pushed one fix for localize string fields and build selection from the source files.

Anyway, the above instructions are what I use myself frequently and they work.