[DoDiODev]

⚠️ Pre Checklist

Please complete ALL items in this checklist, and remove before submitting

• I have read through the Contributing Documentation.
• I have added relevant tests. (existing suites adapted; no new behavior)
• I have added relevant documentation. (N/A — no user-facing change)
• I will add labels to the PR, such as pr-type/bug-fix, pr-type/feature-development, etc.
  (I can't set labels myself; suggested: pr-type/refactor, component/plugins)

Summary

Moves the Python plugin framework from Pydantic 1 to Pydantic 2, as agreed in
#9092. Pydantic 1 does not support Python 3.14, so this is the first step
before the Python runtime (3.11, EOL 2027-10) can be upgraded.

Package	Before	After
pydantic	1.10.27	2.14.3
sqlmodel	0.0.8	0.0.38
SQLAlchemy	1.4.41	2.0.57

Ported: pydevlake, azuredevops, glpi, redmine, zephyr and the e2e
fakeplugin. The three Poetry locks only change the Pydantic stack (plus its
new dependencies pydantic-core, annotated-types, typing-inspection;
sqlalchemy2-stubs is dropped).

pydevlake

• Pydantic 2 APIs: model_config/ConfigDict, field_validator,
  model_fields, model_dump_json, RootModel, Literal instead of
  Field(const=True).
• Optional[...] fields get an explicit = None default (in Pydantic 2 they
  are required otherwise). This accounts for most of the diff in the domain
  layer and plugin models/migrations.
• sa_column=Column(...) → sa_type=... (+ sa_column_kwargs for the
  created_at/updated_at defaults), so columns are not shared between
  inherited tables.
• ToolTable sets coerce_numbers_to_str=True to keep the Pydantic 1
  behavior for APIs that return ids as numbers.
• autoextract uses model_validate: SQLModel table models skip validation
  in __init__, so raw strings would no longer be coerced to
  datetime/enums.
• RawModel keeps its column types (data/input binary, url TEXT), so
  existing raw tables stay compatible. Two tests wrote str into data;
  they now encode to bytes like the collector does (SQLAlchemy 2 rejects
  str for binary columns).
• message.py: SerializeAsAny for RemoteScope.data, otherwise Pydantic 2
  serializes the base type and drops plugin-specific scope fields.
• model_info.py: reads json_schema_extra / annotations instead of
  field.field_info.extra / field.required.
• Test harness: expected and actual models are re-validated before comparing,
  so both sides have the same field types.

Plugins

• glpi: GLPI expands dropdowns to 'Name (id)'; these values are reduced to
  the id before validation of the integer columns. The names are still read
  from the raw data for enrichment, so the output does not change.
• redmine, zephyr: class Config → model_config.
• fakeplugin: ids as strings, Optional defaults.

Dependabot

• The pydantic major-version ignore is removed.
• The sqlmodel ignore stays: 0.0.48 rejects naive datetimes (pydevlake uses
  datetime.now()/utcnow()) and pulls in SQLAlchemy 2.1. That is a separate
  follow-up.

Does this close any open issues?

Part of #9092 (Pydantic step; Python runtime upgrade follows separately).

Screenshots

N/A

Other Information

Tests

• cd backend/python && sh ./run_tests.sh — passed:
  azuredevops 8 passed / 1 skipped, glpi 72 passed / 1 skipped,
  redmine 31 passed / 1 skipped, zephyr 26 passed, pydevlake 13 passed.
• make unit-test and make e2e-test (MySQL and PostgreSQL, includes the
  Python fakeplugin) — passed in the fork CI: run 42621392320 (16/16 jobs)

Not in this PR

• Python runtime 3.11 → 3.13/3.14 (next PR).
• sqlmodel ≥ 0.0.48 / SQLAlchemy 2.1 (timezone-aware datetimes).
• Pinning the uv installer in backend/Dockerfile and the lake-builder image.

[klesh]

LGTM
Thanks for your contribution.