feat(streaming): per-platform streaming defaults (Telegram on, Discord off) + dashboard toggles

[teknium1]

Summary

Streaming quality differs sharply by platform, so ship defaults that match reality instead of one global flag. Telegram has native animated draft streaming (sendMessageDraft) and looks great; Discord/Slack only have edit-based streaming (repeated editMessage) which visibly flickers. The shipped default now enables streaming on Telegram and disables it on Discord.

As a bonus, because the dashboard's settings schema is generated from DEFAULT_CONFIG, populating the per-platform block also surfaces these as editable toggles in the web UI — no frontend change needed. (Previously display.platforms was {}, so per-platform streaming was hand-edit-YAML-only and invisible in the dashboard.)

Changes

• hermes_cli/config.py: DEFAULT_CONFIG["display"]["platforms"] now ships {"telegram": {"streaming": true}, "discord": {"streaming": false}} (was empty {}), with a documented comment explaining the per-platform/streaming-quality rationale.
• Per-platform flags are gap-fillers: config deep-merge has user values win, so anyone who explicitly sets discord.streaming: true keeps it. The global streaming.enabled master switch still gates everything — these flags only take effect once streaming is on.
• tests/gateway/test_per_platform_streaming_defaults.py: pins the defaults, the resolver outcome (telegram on / discord off / unlisted platforms follow global), user-override-wins, and dashboard schema exposure.

Dashboard exposure (free)

Field	Surfaced as
display.platforms.telegram.streaming	boolean toggle
display.platforms.discord.streaming	boolean toggle
streaming.enabled / streaming.transport / …	already exposed (#37285)

Why no version bump

load_config() deep-merges DEFAULT_CONFIG over user YAML, so existing installs pick up the new per-platform defaults automatically and a user's explicit value is never clobbered. No value migration needed, so _config_version is unchanged.

Validation

116 passed (new per-platform tests + config, config-drift, config-validation, streaming-nested suites). Verified: resolver gives telegram-on/discord-off under global-enabled, partial user override preserves sibling defaults, dashboard schema includes both per-platform boolean toggles.

Infographic

[github-actions]

🔎 Lint report: feat/streaming-per-platform vs origin/main

ruff

Total: 0 on HEAD, 0 on base (➖ 0)

🆕 New issues: none

✅ Fixed issues: none

Unchanged: 0 pre-existing issues carried over.

ty (type checker)

Total: 9670 on HEAD, 9647 on base (🆕 +23)

🆕 New issues (20):

Rule	Count
invalid-argument-type	11
unsupported-operator	4
not-subscriptable	3
unresolved-import	1
unresolved-attribute	1

First entries

tests/gateway/test_per_platform_streaming_defaults.py:16: [invalid-argument-type] invalid-argument-type: Method `__getitem__` of type `Overload[(i: SupportsIndex, /) -> Unknown, (s: slice[SupportsIndex | None, SupportsIndex | None, SupportsIndex | None], /) -> list[Unknown]]` cannot be called with key of type `Literal["platforms"]` on object of type `list[Unknown]`
tests/gateway/test_per_platform_streaming_defaults.py:17: [invalid-argument-type] invalid-argument-type: Method `__getitem__` of type `Overload[(i: SupportsIndex, /) -> Unknown, (s: slice[SupportsIndex | None, SupportsIndex | None, SupportsIndex | None], /) -> list[Unknown]]` cannot be called with key of type `Literal["telegram"]` on object of type `list[Unknown]`
tests/gateway/test_per_platform_streaming_defaults.py:18: [invalid-argument-type] invalid-argument-type: Method `__getitem__` of type `bound method str.__getitem__(key: SupportsIndex | slice[SupportsIndex | None, SupportsIndex | None, SupportsIndex | None], /) -> str` cannot be called with key of type `Literal["streaming"]` on object of type `str`
tests/gateway/test_per_platform_streaming_defaults.py:18: [not-subscriptable] not-subscriptable: Cannot subscript object of type `int` with no `__getitem__` method
tests/gateway/test_per_platform_streaming_defaults.py:18: [invalid-argument-type] invalid-argument-type: Method `__getitem__` of type `Overload[(i: SupportsIndex, /) -> Unknown, (s: slice[SupportsIndex | None, SupportsIndex | None, SupportsIndex | None], /) -> list[Unknown]]` cannot be called with key of type `Literal["streaming"]` on object of type `list[Unknown]`
tests/gateway/test_per_platform_streaming_defaults.py:16: [invalid-argument-type] invalid-argument-type: Method `__getitem__` of type `bound method str.__getitem__(key: SupportsIndex | slice[SupportsIndex | None, SupportsIndex | None, SupportsIndex | None], /) -> str` cannot be called with key of type `Literal["platforms"]` on object of type `str`
tests/gateway/test_per_platform_streaming_defaults.py:17: [invalid-argument-type] invalid-argument-type: Method `__getitem__` of type `bound method str.__getitem__(key: SupportsIndex | slice[SupportsIndex | None, SupportsIndex | None, SupportsIndex | None], /) -> str` cannot be called with key of type `Literal["telegram"]` on object of type `str`
tests/agent/test_auxiliary_config_bridge.py:284: [unsupported-operator] unsupported-operator: Operator `in` is not supported between objects of type `Literal["provider"]` and `Unknown | int | str | ... omitted 13 union elements`
gateway/restart.py:10: [invalid-argument-type] invalid-argument-type: Argument to constructor `float.__new__` is incorrect: Expected `str | Buffer | SupportsFloat | SupportsIndex`, found `Unknown | int | str | ... omitted 13 union elements`
tests/agent/test_curator.py:999: [unsupported-operator] unsupported-operator: Operator `>` is not supported between objects of type `Unknown | int | str | ... omitted 4 union elements` and `Literal[0]`
tests/gateway/test_per_platform_streaming_defaults.py:18: [invalid-argument-type] invalid-argument-type: Method `__getitem__` of type `Overload[(i: SupportsIndex, /) -> str, (s: slice[SupportsIndex | None, SupportsIndex | None, SupportsIndex | None], /) -> list[str]]` cannot be called with key of type `Literal["streaming"]` on object of type `list[str]`
tests/gateway/test_per_platform_streaming_defaults.py:18: [invalid-argument-type] invalid-argument-type: Method `__getitem__` of type `bound method str.__getitem__(key: SupportsIndex | slice[SupportsIndex | None, SupportsIndex | None, SupportsIndex | None], /) -> str` cannot be called with key of type `Literal["discord"]` on object of type `str`
tests/gateway/test_per_platform_streaming_defaults.py:18: [not-subscriptable] not-subscriptable: Cannot subscript object of type `float` with no `__getitem__` method
tests/hermes_cli/test_aux_config.py:41: [unsupported-operator] unsupported-operator: Operator `>` is not supported between objects of type `Unknown | int | str | ... omitted 4 union elements` and `Literal[0]`
tests/gateway/test_per_platform_streaming_defaults.py:18: [invalid-argument-type] invalid-argument-type: Method `__getitem__` of type `Overload[(i: SupportsIndex, /) -> Unknown, (s: slice[SupportsIndex | None, SupportsIndex | None, SupportsIndex | None], /) -> list[Unknown]]` cannot be called with key of type `Literal["discord"]` on object of type `list[Unknown]`
tests/gateway/test_per_platform_streaming_defaults.py:56: [unresolved-import] unresolved-import: Cannot resolve imported module `pytest`
tests/gateway/test_per_platform_streaming_defaults.py:18: [not-subscriptable] not-subscriptable: Cannot subscript object of type `None` with no `__getitem__` method
tests/gateway/test_per_platform_streaming_defaults.py:16: [invalid-argument-type] invalid-argument-type: Method `__getitem__` of type `Overload[(i: SupportsIndex, /) -> str, (s: slice[SupportsIndex | None, SupportsIndex | None, SupportsIndex | None], /) -> list[str]]` cannot be called with key of type `Literal["platforms"]` on object of type `list[str]`
tests/agent/test_auxiliary_config_bridge.py:285: [unsupported-operator] unsupported-operator: Operator `in` is not supported between objects of type `Literal["model"]` and `Unknown | int | str | ... omitted 13 union elements`
hermes_cli/config.py:4451: [unresolved-attribute] unresolved-attribute: Attribute `items` is not defined on `int`, `str`, `list[Unknown]`, `float`, `None` in union `Unknown | int | str | ... omitted 13 union elements`

✅ Fixed issues (6):

Rule	Count
unsupported-operator	4
unresolved-attribute	1
invalid-argument-type	1

First entries

hermes_cli/config.py:4431: [unresolved-attribute] unresolved-attribute: Attribute `items` is not defined on `int`, `str`, `list[Unknown]`, `float`, `None` in union `Unknown | int | str | ... omitted 12 union elements`
gateway/restart.py:10: [invalid-argument-type] invalid-argument-type: Argument to constructor `float.__new__` is incorrect: Expected `str | Buffer | SupportsFloat | SupportsIndex`, found `Unknown | int | str | ... omitted 12 union elements`
tests/agent/test_auxiliary_config_bridge.py:284: [unsupported-operator] unsupported-operator: Operator `in` is not supported between objects of type `Literal["provider"]` and `Unknown | int | str | ... omitted 12 union elements`
tests/agent/test_auxiliary_config_bridge.py:285: [unsupported-operator] unsupported-operator: Operator `in` is not supported between objects of type `Literal["model"]` and `Unknown | int | str | ... omitted 12 union elements`
tests/agent/test_curator.py:999: [unsupported-operator] unsupported-operator: Operator `>` is not supported between objects of type `Unknown | int | str | ... omitted 3 union elements` and `Literal[0]`
tests/hermes_cli/test_aux_config.py:41: [unsupported-operator] unsupported-operator: Operator `>` is not supported between objects of type `Unknown | int | str | ... omitted 3 union elements` and `Literal[0]`

Unchanged: 4991 pre-existing issues carried over.

Diagnostics are surfaced as warnings — this check never fails the build.