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refactor(ml): remove the dead per-tag centroid subsystem (#1189)
The v2 pivot replaced per-tag SigLIP centroids with learned heads + CCIP.
Centroids were still recomputed (on every tag merge + a daily beat) but NOTHING
read them — suggestions come from heads+CCIP and apply_allowlist_tags applies
via Camie predictions, not centroids. Pure dead wiring; remove it.

Removed: CentroidService, recompute_centroid/recompute_centroids tasks, the
daily beat, POST /api/ml/recompute-centroids, the recompute-on-merge trigger,
the tag_reference_embedding table + model, the centroid_similarity_threshold +
min_reference_images settings (migration 0066), the CentroidRecomputeCard +
its store action + MaintenancePanel tile, and the centroid slider in
MLThresholdSliders. _keep_as_alias drops its vestigial has-centroid branch (the
allowlist branch already covers "could re-emit"); tag merge no longer clears a
table that no longer exists.

NOT touched (still live, parallel to heads): the Camie tagger, ImagePrediction,
and the allowlist bulk-apply — accepting a suggestion still allowlists + applies
it across the library. The tag-eval "centroid" baseline metric is unrelated
(in-memory) and stays. (image_record.centroid_scores JSON column also remains —
separate legacy field, its own micro-cleanup.)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ttrj5P7upUTueSfoJcxEqa
2026-06-30 11:48:09 -04:00

58 lines
1.9 KiB
Python

"""drop the dead per-tag centroid subsystem (#1189 cleanup)
The v2 pivot replaced per-tag SigLIP centroids with learned heads + CCIP.
Nothing read the centroids anymore — they were recomputed (on merge + a daily
beat) but never consumed for suggestions or auto-apply. Remove the storage +
its two now-unused settings columns. (The recompute tasks, beat, endpoint,
service, and UI card are removed in the same change.)
Revision ID: 0066
Revises: 0065
Create Date: 2026-06-30
"""
from typing import Sequence, Union
import sqlalchemy as sa
from alembic import op
revision: str = "0066"
down_revision: Union[str, None] = "0065"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None
def upgrade() -> None:
op.drop_table("tag_reference_embedding")
op.drop_column("ml_settings", "centroid_similarity_threshold")
op.drop_column("ml_settings", "min_reference_images")
def downgrade() -> None:
op.add_column(
"ml_settings",
sa.Column(
"min_reference_images", sa.Integer(), nullable=False,
server_default="5",
),
)
op.add_column(
"ml_settings",
sa.Column(
"centroid_similarity_threshold", sa.Float(), nullable=False,
server_default="0.55",
),
)
op.create_table(
"tag_reference_embedding",
sa.Column("tag_id", sa.Integer(), nullable=False),
sa.Column("embedding", sa.LargeBinary(), nullable=False),
sa.Column("reference_count", sa.Integer(), nullable=False),
sa.Column("model_version", sa.String(length=128), nullable=False),
sa.Column(
"updated_at", sa.DateTime(timezone=True),
server_default=sa.func.now(), nullable=False,
),
sa.ForeignKeyConstraint(["tag_id"], ["tag.id"], ondelete="CASCADE"),
sa.PrimaryKeyConstraint("tag_id"),
)