Paste files in chat, agent step limit control, evaluator improvements…

.gitignore

@@ -373,3 +373,4 @@ components.d.ts
 **/.vscode/*
 .wxt
 var
+.vscfavoriterc

CONTRIBUTING.md

@@ -33,6 +33,7 @@ Before submitting changes, please run checks and tests as described in [Automate
 - [Docker](https://www.docker.com/)
 - [devbox](https://www.jetpack.io/devbox)
 - [git-lfs](https://docs.github.com/en/repositories/working-with-files/managing-large-files/installing-git-large-file-storage)
+- If you use a Visual Studio Code based IDE (like Cursor, Antigravity, etc), then consider installing the [EditorConfig extension](https://marketplace.visualstudio.com/items?itemName=EditorConfig.EditorConfig) to apply all the rules defined in `.editorconfig` and keep the code format consistent.
 
 ### Setup
 

devbox.json

@@ -2,6 +2,8 @@
   "$schema": "https://raw.githubusercontent.com/jetify-com/devbox/0.14.0/.schema/devbox.schema.json",
   "packages": {
     "python": "3.13",
+    "git": "latest",
+    "uv": "latest",
     "poetry": {
       "version": "latest",
       // this fails because is trying to find a pyproject.toml at the root of the project
@@ -56,6 +58,9 @@
         "cd src/backend",
         "poetry run python -m tero.secrets_cleanup"
       ],
+      "vllm": [
+        "./scripts/vllm.sh"
+      ],
       "playwright": [
         "docker compose up playwright"
       ],

devbox.lock

@@ -1,6 +1,78 @@
 {
   "lockfile_version": "1",
   "packages": {
+    "git@latest": {
+      "last_modified": "2026-01-23T17:20:52Z",
+      "resolved": "github:NixOS/nixpkgs/a1bab9e494f5f4939442a57a58d0449a109593fe#git",
+      "source": "devbox-search",
+      "version": "2.52.0",
+      "systems": {
+        "aarch64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/vnhprisb777byfjpp5mdd0mxwkpvhbc0-git-2.52.0",
+              "default": true
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/p0dx3053175fpr3kjf0fqgs9x6gm3dri-git-2.52.0-doc"
+            }
+          ],
+          "store_path": "/nix/store/vnhprisb777byfjpp5mdd0mxwkpvhbc0-git-2.52.0"
+        },
+        "aarch64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/sd4bjblxfljbm13mpl50x8g336gw2dri-git-2.52.0",
+              "default": true
+            },
+            {
+              "name": "debug",
+              "path": "/nix/store/cx033x4nmr12d9dcn8hxjfrajc3983f0-git-2.52.0-debug"
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/ylsmgdrnp78p8hn7n9lxpada78dka41v-git-2.52.0-doc"
+            }
+          ],
+          "store_path": "/nix/store/sd4bjblxfljbm13mpl50x8g336gw2dri-git-2.52.0"
+        },
+        "x86_64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/sr42bfqa0pc2ysba678mrm49g78jdynp-git-2.52.0",
+              "default": true
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/fky0ci2bhwgyh9klg5682pmqswqg7wk4-git-2.52.0-doc"
+            }
+          ],
+          "store_path": "/nix/store/sr42bfqa0pc2ysba678mrm49g78jdynp-git-2.52.0"
+        },
+        "x86_64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/ipwndaag56mm8g8gn8j98z0jvn8x4mk1-git-2.52.0",
+              "default": true
+            },
+            {
+              "name": "debug",
+              "path": "/nix/store/zd8di23fmzjwrhb5ij1bjnlfqkx9j7d6-git-2.52.0-debug"
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/d8kc4kqzcrbcj92msxrpdsdjglh2q5gp-git-2.52.0-doc"
+            }
+          ],
+          "store_path": "/nix/store/ipwndaag56mm8g8gn8j98z0jvn8x4mk1-git-2.52.0"
+        }
+      }
+    },
     "github:NixOS/nixpkgs/nixpkgs-unstable": {
       "last_modified": "2025-10-23T16:27:14Z",
       "resolved": "github:NixOS/nixpkgs/d5faa84122bc0a1fd5d378492efce4e289f8eac1?lastModified=1761236834&narHash=sha256-%2Bpthv6hrL5VLW2UqPdISGuLiUZ6SnAXdd2DdUE%2BfV2Q%3D"
@@ -238,6 +310,54 @@
           "store_path": "/nix/store/2mab9iiwhcqwk75qwvp3zv0bvbiaq6cs-python3-3.13.3"
         }
       }
+    },
+    "uv@latest": {
+      "last_modified": "2026-01-30T02:32:49Z",
+      "resolved": "github:NixOS/nixpkgs/6308c3b21396534d8aaeac46179c14c439a89b8a#uv",
+      "source": "devbox-search",
+      "version": "0.9.27",
+      "systems": {
+        "aarch64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/bj9jidx7h317hmnz220qpka6850sjvi1-uv-0.9.27",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/bj9jidx7h317hmnz220qpka6850sjvi1-uv-0.9.27"
+        },
+        "aarch64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/2703hnsgll85c1rpzzqycnmp0jvy579z-uv-0.9.27",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/2703hnsgll85c1rpzzqycnmp0jvy579z-uv-0.9.27"
+        },
+        "x86_64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/il24573a65xa0bfy2d6kli6nvnx80qhv-uv-0.9.27",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/il24573a65xa0bfy2d6kli6nvnx80qhv-uv-0.9.27"
+        },
+        "x86_64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/k9b6fbx5pzj04fws4na77i4pb5l64li8-uv-0.9.27",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/k9b6fbx5pzj04fws4na77i4pb5l64li8-uv-0.9.27"
+        }
+      }
     }
   }
 }

scripts/vllm.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+set -e
+
+# using v0.14.1 since when using v0.15.1 we get "Failed to import from vllm._C ... _C.abi.so" and then "AttributeError: '_OpNamespace' '_C_utils' object has no attribute 'init_cpu_threads_env'" when starting vllm serve.
+[ -d var/vllm/.git ] || git clone -b v0.14.1 https://github.com/vllm-project/vllm.git var/vllm
+cd var/vllm
+
+# C++: 0 < M <= 8 is parsed as (0 < M) <= 8; fix to (0 < M) && (M <= 8) so Clang on macOS accepts it
+sed -i.bak 's/static_assert(0 < M <= 8);/static_assert(0 < M \&\& M <= 8);/g' csrc/cpu/cpu_attn_vec.hpp 2>/dev/null || true
+sed -i.bak 's/static_assert(0 < M <= 16);/static_assert(0 < M \&\& M <= 16);/g' csrc/cpu/cpu_attn_vec16.hpp 2>/dev/null || true
+
+if [ ! -x .venv/bin/vllm ]; then
+  ([ -d .venv ] || uv venv --seed .venv)
+  . .venv/bin/activate
+  uv pip install -r requirements/cpu.txt --index-strategy unsafe-best-match
+  uv pip install -e ".[audio]"
+else
+  . .venv/bin/activate
+fi
+
+cleanup() {
+  [ -n "$CHAT_PID" ] && kill "$CHAT_PID" 2>/dev/null || true
+  [ -n "$EMBED_PID" ] && kill "$EMBED_PID" 2>/dev/null || true
+  [ -n "$TRANSCRIBE_PID" ] && kill "$TRANSCRIBE_PID" 2>/dev/null || true
+  wait 2>/dev/null || true
+}
+trap cleanup EXIT INT TERM
+
+vllm serve Qwen/Qwen2.5-1.5B-Instruct --dtype auto --api-key test-token --port 8001 --enable-auto-tool-choice --tool-call-parser hermes &
+CHAT_PID=$!
+sleep 2
+vllm serve nomic-ai/nomic-embed-text-v1 --api-key test-token --trust-remote-code --port 8002 &
+EMBED_PID=$!
+
+wait
+

src/backend/alembic/versions/20260205-613cc99427e2-qwen_2_5_1_5b_model.py

@@ -0,0 +1,41 @@
+"""qwen_2.5_1.5b_model
+
+Revision ID: 613cc99427e2
+Revises: c3ae0aefa4d1
+Create Date: 2026-02-05 16:23:32.147821
+
+"""
+from typing import Sequence, Union
+from alembic import op
+from alembic_postgresql_enum import TableReference
+
+# revision identifiers, used by Alembic.
+revision: str = '613cc99427e2'
+down_revision: Union[str, None] = 'c3ae0aefa4d1'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.sync_enum_values( # type: ignore
+        enum_schema='public',
+        enum_name='llmmodelvendor',
+        new_values=['ANTHROPIC', 'GOOGLE', 'OPENAI', 'QWEN'],
+        affected_columns=[TableReference(table_schema='public', table_name='llm_model', column_name='model_vendor')],
+        enum_values_to_rename=[],
+    )
+    op.execute("""
+        INSERT INTO llm_model (id, name, description, token_limit, output_token_limit, prompt_1k_token_usd, completion_1k_token_usd, model_type, model_vendor) VALUES
+        ('qwen-2.5-1.5b', 'Qwen 2.5 1.5B', 'This is a free, open‑source model for simple tasks and basic coding; less capable than GPT‑4o Mini and GPT‑4.1 Nano.', 128000, 8000, 0.0, 0.0, 'CHAT', 'QWEN')
+    """)
+
+
+def downgrade() -> None:
+    op.execute("DELETE FROM llm_model WHERE id = 'qwen-2.5-1.5b'")
+    op.sync_enum_values( # type: ignore
+        enum_schema='public',
+        enum_name='llmmodelvendor',
+        new_values=['ANTHROPIC', 'GOOGLE', 'OPENAI'],
+        affected_columns=[TableReference(table_schema='public', table_name='llm_model', column_name='model_vendor')],
+        enum_values_to_rename=[],
+    )

src/backend/alembic/versions/20260210-fd24763a078c-recursion_limit.py

@@ -0,0 +1,43 @@
+"""recursion-limit
+
+Revision ID: fd24763a078c
+Revises: 613cc99427e2
+Create Date: 2026-02-10 12:30:05.846201
+
+"""
+
+import sqlalchemy as sa
+import sqlmodel
+from typing import Sequence, Union
+from alembic import op
+
+
+# revision identifiers, used by Alembic.
+revision: str = "fd24763a078c"
+down_revision: Union[str, None] = "613cc99427e2"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.add_column(
+        "agent",
+        sa.Column(
+            "recursion_limit",
+            sa.Integer(),
+            nullable=False,
+            server_default=sa.literal_column("40"),
+        ),
+    )
+    op.create_check_constraint(
+        "agent_recursion_limit_range",
+        "agent",
+        "recursion_limit >= 20 AND recursion_limit <= 100",
+    )
+
+
+def downgrade() -> None:
+    op.execute(
+        "ALTER TABLE agent DROP CONSTRAINT IF EXISTS agent_recursion_limit_range"
+    )
+    op.drop_column("agent", "recursion_limit")

src/backend/alembic/versions/20260211-8e9d8ca4dd0c-thread_message_origin_system.py

@@ -0,0 +1,38 @@
+"""thread_message_origin_system
+
+Revision ID: 8e9d8ca4dd0c
+Revises: fd24763a078c
+Create Date: 2026-02-11 19:05:25.867844
+
+"""
+import sqlalchemy as sa
+import sqlmodel
+from typing import Sequence, Union
+from alembic import op
+from alembic_postgresql_enum import TableReference
+
+# revision identifiers, used by Alembic.
+revision: str = '8e9d8ca4dd0c'
+down_revision: Union[str, None] = 'fd24763a078c'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.sync_enum_values( # type: ignore
+        enum_schema="public",
+        enum_name="threadmessageorigin",
+        new_values=["USER", "AGENT", "SYSTEM"],
+        affected_columns=[TableReference(table_schema="public", table_name="thread_message", column_name="origin")],
+        enum_values_to_rename=[],
+    )
+
+
+def downgrade() -> None:
+    op.sync_enum_values( # type: ignore
+        enum_schema="public",
+        enum_name="threadmessageorigin",
+        new_values=["USER", "AGENT"],
+        affected_columns=[TableReference(table_schema="public", table_name="thread_message", column_name="origin")],
+        enum_values_to_rename=[],
+    )

src/backend/tero/agents/api.py

@@ -14,9 +14,8 @@
 from ..core.env import env
 from ..core.repos import get_db
 from ..files.api import build_file_download_response
+from ..files.core import QuotaExceededError, add_encoding_to_content_type
 from ..files.domain import File, FileStatus, FileUpdate, FileMetadata, FileMetadataWithContent
-from ..files.file_quota import QuotaExceededError
-from ..files.parser import add_encoding_to_content_type
 from ..files.repos import FileRepository
 from ..teams.domain import GLOBAL_TEAM_ID, Role
 from ..tools.core import AgentTool

src/backend/tero/agents/domain.py

@@ -22,10 +22,10 @@
 
 class BaseAgent(CamelCaseModel, abc.ABC):
     id: int = Field(primary_key=True, default=None)
-    name: Optional[str] = Field(max_length=NAME_MAX_LENGTH, default=None)   
+    name: Optional[str] = Field(max_length=NAME_MAX_LENGTH, default=None)
     description: Optional[str] = Field(max_length=100, default=None)
     last_update: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
-    
+
     def set_default_name(self):
         self.name = f"Agent #{self.id}"
 
@@ -38,6 +38,7 @@ class AgentUpdate(CamelCaseModel):
     system_prompt: Optional[str] = None
     temperature: Optional[LlmTemperature] = None
     reasoning_effort: Optional[ReasoningEffort] = None
+    recursion_limit: Optional[int] = None
     publish_prompts: Optional[bool] = None
     team_id: Optional[int] = None
 
@@ -55,10 +56,11 @@ class Agent(BaseAgent, table=True):
     system_prompt: str = Field(sa_column=Column(Text))
     temperature: LlmTemperature = LlmTemperature.NEUTRAL
     reasoning_effort: ReasoningEffort = ReasoningEffort.LOW
+    recursion_limit: int = Field(default=20, ge=20, le=100)
     team_id: Optional[int] = Field(default=None, foreign_key="team.id")
     team: Optional[Team] = Relationship()
     evaluator_id: Optional[int] = Field(default=None, foreign_key="evaluator.id")
-    
+
     def update_with(self, update: AgentUpdate):
         update_dict = update.model_dump(exclude_none=True)
         update_dict["icon"] = base64.b64decode(update_dict["icon"]) if update_dict.get("icon") else None
@@ -79,7 +81,7 @@ def is_visible_by(self, user: User) -> bool:
 
     def is_editable_by(self, user: User) -> bool:
         return self.user_id == user.id or any(
-            tr.role in [Role.TEAM_OWNER, Role.TEAM_EDITOR] and cast(Team, tr.team).id == self.team_id 
+            tr.role in [Role.TEAM_OWNER, Role.TEAM_EDITOR] and cast(Team, tr.team).id == self.team_id
             for tr in user.team_roles
         )
 
@@ -130,9 +132,10 @@ class PublicAgent(BaseAgent):
     system_prompt: str
     temperature: LlmTemperature
     reasoning_effort: ReasoningEffort
+    recursion_limit: int
     user: Optional[UserListItem] = None
     team: Optional[Team] = None
-    
+
     @staticmethod
     def from_agent(a: Agent, can_edit: bool) -> 'PublicAgent':
         agent_dict = a.model_dump()