feat(exporter): Prisma ORM exporter 추가 (PR #151 이어받음)

.changepacks/changepack_log_vKVGmtRxkfW3nE7rIhMcz.json

@@ -0,0 +1 @@
+{"changes":{"crates/vespertide-naming/Cargo.toml":"Minor","crates/vespertide-exporter/Cargo.toml":"Minor","crates/vespertide-cli/Cargo.toml":"Minor"},"note":"Prisma ORM exporter 추가","date":"2026-07-09T14:25:30.6412773Z"}

AGENTS.md

@@ -18,7 +18,7 @@ vespertide/
 │   ├── vespertide-planner/   # Schema diffing, baseline reconstruction, validation
 │   ├── vespertide-query/     # SQL generation (Postgres/MySQL/SQLite)
 │   ├── vespertide-cli/       # CLI commands: init, diff, sql, revision, export
-│   ├── vespertide-exporter/  # ORM codegen: SeaORM, SQLAlchemy, SQLModel
+│   ├── vespertide-exporter/  # ORM codegen: SeaORM, SQLAlchemy, SQLModel, JPA, Prisma
 │   ├── vespertide-loader/    # Filesystem loading of models/migrations
 │   ├── vespertide-config/    # vespertide.json configuration
 │   ├── vespertide-lsp/       # Language server: 13 LSP capabilities + HS-7~11 caching
@@ -47,7 +47,7 @@ vespertide/
 | Schema diffing | `vespertide-planner/src/diff/` | topological sort for FK deps |
 | SQL generation | `vespertide-query/src/sql/` | One file per action type |
 | CLI commands | `vespertide-cli/src/commands/` | `cmd_*` functions |
-| ORM export | `vespertide-exporter/src/{seaorm,sqlalchemy,sqlmodel,jpa}/` | Backend-specific generators |
+| ORM export | `vespertide-exporter/src/{seaorm,sqlalchemy,sqlmodel,jpa,prisma}/` | Backend-specific generators |
 | Compile-time macro | `vespertide-macro/src/lib.rs` | `vespertide_migration!` proc macro |
 | **LSP RingCache (HS-7~11)** | `vespertide-lsp/src/cache.rs` | Generic ring-buffer LRU shared across symbols/diagnostics/drift/semantic-token caches |
 | **LSP drift cache** | `vespertide-lsp/src/drift/cache.rs` | HS-10 drift cache implementation |
@@ -169,7 +169,7 @@ See `docs/clippy-allow-audit.md` for the full audit history.
 | `QueryError::Other(...)` in new code | Emits deprecation warning. Use `SchemaError` / `InvalidColumnType` / `BackendError` / `UnsupportedAction` |
 | Exhaustive struct literal for `MigrationOptions` / `VespertideConfig` | `#[non_exhaustive]` — use `..Default::default()` |
 | Comparing newtype with `String::eq(&name.to_string(), "user")` | `TableName: PartialEq<&str>` — use `name == "user"` directly |
-| Per-ORM exporter snapshot test (single ORM) | Use the 4-ORM `orm_cases!` macro; snapshots must cross-compare all ORMs |
+| Per-ORM exporter snapshot test (single ORM) | Use the 5-ORM `orm_cases!` macro; snapshots must cross-compare all ORMs |
 
 ## COMMANDS
 
@@ -368,12 +368,12 @@ fn create_table_snapshot(#[case] backend: DatabaseBackend) {
 }
 ```
 
-This is the same pattern used by `vespertide-query` (3 backends, 357 snapshots) and `vespertide-exporter` (4 ORMs via `Orm` enum, 232 cross-ORM snapshots). When adding a new backend / ORM / format, the change is **one `#[case::name(Value)]` line**.
+This is the same pattern used by `vespertide-query` (3 backends, 357 snapshots) and `vespertide-exporter` (5 ORMs via `Orm` enum, 315 cross-ORM snapshots). When adding a new backend / ORM / format, the change is **one `#[case::name(Value)]` line**.
 
 ### Exporter snapshots MUST cover ALL ORMs (no per-ORM snapshots)
-Every `vespertide-exporter` snapshot test MUST be written through the shared `orm_cases!` rstest macro in `crates/vespertide-exporter/src/tests/mod.rs`, which renders each fixture for **all four ORMs** (`Orm::SeaOrm`, `Orm::SqlAlchemy`, `Orm::SqlModel`, `Orm::Jpa`). A new export scenario = ONE fixture + ONE `orm_cases!(...)` line, producing exactly four snapshots (one per ORM) in the single shared `crates/vespertide-exporter/src/tests/snapshots/` directory.
+Every `vespertide-exporter` snapshot test MUST be written through the shared `orm_cases!` rstest macro in `crates/vespertide-exporter/src/tests/mod.rs`, which renders each fixture for **all five ORMs** (`Orm::SeaOrm`, `Orm::SqlAlchemy`, `Orm::SqlModel`, `Orm::Jpa`, `Orm::Prisma`). A new export scenario = ONE fixture + ONE `orm_cases!(...)` line, producing exactly five snapshots (one per ORM) in the single shared `crates/vespertide-exporter/src/tests/snapshots/` directory.
 
-FORBIDDEN: per-ORM `#[test]` snapshot functions inside `src/seaorm/`, `src/sqlalchemy/`, `src/sqlmodel/`, `src/jpa/`, or any `snapshots/` directory other than `src/tests/snapshots/`. A scenario snapshotted for only one ORM is a defect — ORM output must always be cross-compared across all four. When adding a new ORM the change is a single `#[case::<orm>(Orm::<Variant>)]` line in the macro, never a new per-ORM test.
+FORBIDDEN: per-ORM `#[test]` snapshot functions inside `src/seaorm/`, `src/sqlalchemy/`, `src/sqlmodel/`, `src/jpa/`, `src/prisma/`, or any `snapshots/` directory other than `src/tests/snapshots/`. A scenario snapshotted for only one ORM is a defect — ORM output must always be cross-compared across all five. When adding a new ORM the change is a single `#[case::<orm>(Orm::<Variant>)]` line in the macro, never a new per-ORM test.
 
 ### `#[cfg(test)]` test-oracle pattern
 When a function exists solely as an oracle for a regression test (e.g. comparing

crates/vespertide-cli/Cargo.toml

@@ -30,6 +30,7 @@ dot-writer = "0.1.4"
 vespertide-config = { workspace = true, features = ["cli", "schema"] }
 vespertide-core = { workspace = true, features = ["schema"] }
 vespertide-loader = { workspace = true }
+vespertide-naming = { workspace = true }
 vespertide-planner = { workspace = true }
 vespertide-query = { workspace = true }
 vespertide-exporter = { workspace = true }

crates/vespertide-cli/src/commands/erd/mod.rs

@@ -10,6 +10,7 @@ use clap::ValueEnum;
 use vespertide_core::schema::foreign_key::ForeignKeySyntax;
 use vespertide_core::schema::primary_key::PrimaryKeySyntax;
 use vespertide_core::{ColumnDef, ReferenceAction, StrOrBoolOrArray, TableConstraint, TableDef};
+use vespertide_naming::IdentifierStart;
 
 use crate::utils::{load_config, load_models};
 
@@ -262,25 +263,10 @@ pub(super) fn column_markers(table: &TableDef, column: &ColumnDef) -> String {
     }
 }
 
+/// Node id for a Mermaid or Graphviz diagram. Both accept the same shape as a
+/// Rust module name, so this is the shared underscore rule.
 pub(super) fn sanitize_identifier(input: &str) -> String {
-    let mut identifier = String::new();
-
-    for (index, ch) in input.chars().enumerate() {
-        if ch == '_' || ch.is_ascii_alphanumeric() {
-            if index == 0 && ch.is_ascii_digit() {
-                identifier.push('_');
-            }
-            identifier.push(ch);
-        } else {
-            identifier.push('_');
-        }
-    }
-
-    if identifier.is_empty() {
-        "_".to_string()
-    } else {
-        identifier
-    }
+    vespertide_naming::sanitize_identifier(input, IdentifierStart::Underscore)
 }
 
 fn inline_foreign_key_relation(

crates/vespertide-cli/src/commands/erd/tests/mod.rs

@@ -664,6 +664,24 @@ fn malformed_inline_fk_reference_is_ignored() {
     assert!(collect_foreign_key_relations(&[users, bad]).is_empty());
 }
 
+#[test]
+fn table_level_fk_to_missing_table_is_ignored() {
+    let mut orphan = table(
+        "orphan",
+        vec![primary_key("id", integer()), column("ghost_id", integer())],
+    );
+    orphan.constraints.push(TableConstraint::ForeignKey {
+        name: Some("fk_orphan_ghost".into()),
+        columns: vec!["ghost_id".into()],
+        ref_table: "ghost".into(),
+        ref_columns: vec!["id".into()],
+        on_delete: None,
+        on_update: None,
+        orphan_strategy: Default::default(),
+    });
+    assert!(collect_foreign_key_relations(&[orphan]).is_empty());
+}
+
 #[test]
 fn inline_unique_group_variants_drive_one_to_one_detection() {
     let users = normalize(&table("users", vec![primary_key("id", integer())]));