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feat(dashboard): support serving under URL prefix via X-Forwarded-Prefix (salvage #19450)#21296

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salvage/pr-19450
May 7, 2026
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feat(dashboard): support serving under URL prefix via X-Forwarded-Prefix (salvage #19450)#21296
teknium1 merged 1 commit into
mainfrom
salvage/pr-19450

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@teknium1 teknium1 commented May 7, 2026

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Closes #19450 via salvage.

Summary

Dashboard previously assumed root-host mounting. Behind a path-prefix reverse proxy (e.g. mission-control.tilos.com/hermes/*) the SPA 404'd on /assets/*, plugin loads, and CSS url() refs. Make the dashboard prefix-aware at runtime — proxy injects X-Forwarded-Prefix: /hermes, server rewrites HTML/CSS references + sets window.__HERMES_BASE_PATH__, SPA prefixes fetch/plugin URLs + <BrowserRouter basename>. Backward compat: no header = unchanged root-mount behavior.

Validation

scripts/run_tests.sh tests/hermes_cli/ -k 'web_server or spa' → 278 passed.

Original author: @cmcgrabby-hue.

The Hermes dashboard previously assumed it was served at the root of its
host (e.g. https://kanban.tilos.com/). When mounted behind a path-prefix
reverse proxy (e.g. https://mission-control.tilos.com/hermes/), the SPA
404'd because:

- index.html shipped absolute /assets/index-*.js URLs
- React Router had no basename
- The plugin loader hit /dashboard-plugins/<name>/... at the root host
- CSS in the bundle had absolute url(/fonts/...) references

This patch makes the dashboard prefix-aware at runtime, no rebuild
required. The proxy injects 'X-Forwarded-Prefix: /hermes' on every
request and the Python server:

- Rewrites href/src in served index.html to '${prefix}/assets/...'
- Injects 'window.__HERMES_BASE_PATH__="${prefix}"' for the SPA to read
- Rewrites url() refs in CSS at serve time

The SPA reads window.__HERMES_BASE_PATH__ once at boot and:

- Prefixes all /api/... fetches via api.ts
- Prefixes all /dashboard-plugins/... script/css URLs in usePlugins
- Sets <BrowserRouter basename={...}> so client-side routing works

When no X-Forwarded-Prefix header is present, behavior is unchanged
(empty prefix => serves at root, kanban.tilos.com keeps working).

Refs: MC-AUTO-13
@teknium1 teknium1 merged commit 52e2777 into main May 7, 2026
9 of 11 checks passed
@teknium1 teknium1 deleted the salvage/pr-19450 branch May 7, 2026 13:39
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github-actions Bot commented May 7, 2026

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🔎 Lint report: salvage/pr-19450 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: 7532 on HEAD, 7532 on base (➖ 0)

🆕 New issues (21):

Rule Count
invalid-argument-type 15
unsupported-operator 3
unresolved-attribute 3
First entries
run_agent.py:2899: [invalid-argument-type] invalid-argument-type: Argument to function `get_provider_stale_timeout` is incorrect: Expected `str`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | int | dict[Unknown, Unknown]`
run_agent.py:2437: [invalid-argument-type] invalid-argument-type: Argument to function `get_model_context_length` is incorrect: Expected `str`, found `str | dict[str, str] | Any | ... omitted 3 union elements`
tests/run_agent/test_provider_attribution_headers.py:130: [unsupported-operator] unsupported-operator: Operator `not in` is not supported between objects of type `Literal["X-OpenRouter-Cache"]` and `Unknown | str | dict[str, str] | ... omitted 3 union elements`
tests/run_agent/test_provider_attribution_headers.py:131: [unsupported-operator] unsupported-operator: Operator `not in` is not supported between objects of type `Literal["X-OpenRouter-Cache-TTL"]` and `Unknown | str | dict[str, str] | ... omitted 3 union elements`
run_agent.py:6477: [invalid-argument-type] invalid-argument-type: Argument to function `build_anthropic_client` is incorrect: Expected `str`, found `str | dict[Unknown, Unknown] | Any | ... omitted 3 union elements`
tests/agent/test_codex_cloudflare_headers.py:163: [unresolved-attribute] unresolved-attribute: Attribute `startswith` is not defined on `dict[str, str]` in union `Unknown | str | dict[str, str]`
run_agent.py:12341: [invalid-argument-type] invalid-argument-type: Argument to function `len` is incorrect: Expected `Sized`, found `(str & ~AlwaysFalsy) | (dict[Unknown, Unknown] & ~AlwaysFalsy) | (Any & ~AlwaysFalsy) | ... omitted 3 union elements`
run_agent.py:11929: [invalid-argument-type] invalid-argument-type: Argument to function `estimate_usage_cost` is incorrect: Expected `str | None`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | int | dict[Unknown, Unknown]`
tests/agent/test_codex_cloudflare_headers.py:163: [unresolved-attribute] unresolved-attribute: Attribute `get` is not defined on `str & ~AlwaysFalsy`, `int & ~AlwaysFalsy` in union `(Unknown & ~AlwaysFalsy) | (str & ~AlwaysFalsy) | (dict[str, str] & ~AlwaysFalsy) | ... omitted 3 union elements`
run_agent.py:2389: [invalid-argument-type] invalid-argument-type: Argument to function `_is_oauth_token` is incorrect: Expected `str`, found `(Unknown & ~AlwaysFalsy) | (str & ~AlwaysFalsy) | (dict[str, str] & ~AlwaysFalsy) | ... omitted 4 union elements`
run_agent.py:4649: [invalid-argument-type] invalid-argument-type: Argument to function `parse_rate_limit_headers` is incorrect: Expected `str`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | int | dict[Unknown, Unknown]`
run_agent.py:6306: [invalid-argument-type] invalid-argument-type: Argument to function `_codex_cloudflare_headers` is incorrect: Expected `str`, found `Unknown | str | dict[str, str] | ... omitted 3 union elements`
run_agent.py:8591: [invalid-argument-type] invalid-argument-type: Argument to function `get_provider_profile` is incorrect: Expected `str`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | int | dict[Unknown, Unknown]`
run_agent.py:12338: [invalid-argument-type] invalid-argument-type: Argument to function `_is_oauth_token` is incorrect: Expected `str`, found `str | dict[Unknown, Unknown] | Any | ... omitted 3 union elements`
run_agent.py:8180: [invalid-argument-type] invalid-argument-type: Argument to function `get_transport` is incorrect: Expected `str`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | int | dict[Unknown, Unknown]`
run_agent.py:2160: [invalid-argument-type] invalid-argument-type: Argument to function `query_ollama_num_ctx` is incorrect: Expected `str`, found `(str & ~AlwaysFalsy) | (dict[str, str] & ~AlwaysFalsy) | (Any & ~AlwaysFalsy) | ... omitted 4 union elements`
run_agent.py:11882: [invalid-argument-type] invalid-argument-type: Argument to function `normalize_usage` is incorrect: Expected `str | None`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | int | dict[Unknown, Unknown]`
run_agent.py:12572: [invalid-argument-type] invalid-argument-type: Argument to function `_pool_may_recover_from_rate_limit` is incorrect: Expected `str | None`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | int | dict[Unknown, Unknown]`
tests/agent/test_codex_cloudflare_headers.py:181: [unsupported-operator] unsupported-operator: Operator `in` is not supported between objects of type `Literal["originator"]` and `(Unknown & ~AlwaysFalsy) | (str & ~AlwaysFalsy) | (dict[str, str] & ~AlwaysFalsy) | ... omitted 3 union elements`
run_agent.py:2386: [invalid-argument-type] invalid-argument-type: Argument to function `build_anthropic_client` is incorrect: Expected `str`, found `(Unknown & ~AlwaysFalsy) | (str & ~AlwaysFalsy) | (dict[str, str] & ~AlwaysFalsy) | ... omitted 4 union elements`
tests/run_agent/test_provider_attribution_headers.py:65: [unresolved-attribute] unresolved-attribute: Attribute `startswith` is not defined on `dict[str, str]` in union `Unknown | str | dict[str, str]`

✅ Fixed issues (26):

Rule Count
invalid-argument-type 18
unresolved-attribute 5
unsupported-operator 3
First entries
run_agent.py:3671: [invalid-argument-type] invalid-argument-type: Argument to `AIAgent.__init__` is incorrect: Expected `str`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | ... omitted 3 union elements`
run_agent.py:6306: [invalid-argument-type] invalid-argument-type: Argument to function `_codex_cloudflare_headers` is incorrect: Expected `str`, found `Unknown | str | dict[str, str] | ... omitted 4 union elements`
tests/run_agent/test_provider_attribution_headers.py:131: [unsupported-operator] unsupported-operator: Operator `not in` is not supported between objects of type `Literal["X-OpenRouter-Cache-TTL"]` and `Unknown | str | dict[str, str] | ... omitted 4 union elements`
tests/run_agent/test_provider_attribution_headers.py:65: [unresolved-attribute] unresolved-attribute: Attribute `startswith` is not defined on `dict[str, str]` in union `Unknown | str | Divergent | dict[str, str]`
run_agent.py:12338: [invalid-argument-type] invalid-argument-type: Argument to function `_is_oauth_token` is incorrect: Expected `str`, found `str | dict[Unknown, Unknown] | Any | ... omitted 4 union elements`
run_agent.py:11929: [invalid-argument-type] invalid-argument-type: Argument to function `estimate_usage_cost` is incorrect: Expected `str | None`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | ... omitted 3 union elements`
run_agent.py:2386: [invalid-argument-type] invalid-argument-type: Argument to function `build_anthropic_client` is incorrect: Expected `str`, found `(Unknown & ~AlwaysFalsy) | (str & ~AlwaysFalsy) | (dict[str, str] & ~AlwaysFalsy) | ... omitted 5 union elements`
tests/agent/test_codex_cloudflare_headers.py:181: [unsupported-operator] unsupported-operator: Operator `in` is not supported between objects of type `Literal["originator"]` and `(Unknown & ~AlwaysFalsy) | (str & ~AlwaysFalsy) | (dict[str, str] & ~AlwaysFalsy) | ... omitted 4 union elements`
run_agent.py:10515: [unresolved-attribute] unresolved-attribute: Attribute `strip` is not defined on `dict[Unknown | str, Unknown | str | dict[str, str]] & ~AlwaysFalsy`, `int & ~AlwaysFalsy`, `dict[Unknown, Unknown] & ~AlwaysFalsy` in union `(str & ~AlwaysFalsy) | (Unknown & ~AlwaysFalsy) | (dict[Unknown | str, Unknown | str | dict[str, str]] & ~AlwaysFalsy) | ... omitted 4 union elements`
run_agent.py:8591: [invalid-argument-type] invalid-argument-type: Argument to function `get_provider_profile` is incorrect: Expected `str`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | ... omitted 3 union elements`
tests/agent/test_codex_cloudflare_headers.py:163: [unresolved-attribute] unresolved-attribute: Attribute `startswith` is not defined on `dict[str, str]` in union `Unknown | str | Divergent | dict[str, str]`
run_agent.py:4649: [invalid-argument-type] invalid-argument-type: Argument to function `parse_rate_limit_headers` is incorrect: Expected `str`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | ... omitted 3 union elements`
run_agent.py:12572: [invalid-argument-type] invalid-argument-type: Argument to function `_pool_may_recover_from_rate_limit` is incorrect: Expected `str | None`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | ... omitted 3 union elements`
run_agent.py:6477: [invalid-argument-type] invalid-argument-type: Argument to function `build_anthropic_client` is incorrect: Expected `str`, found `str | dict[Unknown, Unknown] | Any | ... omitted 4 union elements`
run_agent.py:2899: [invalid-argument-type] invalid-argument-type: Argument to function `get_provider_stale_timeout` is incorrect: Expected `str`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | ... omitted 3 union elements`
run_agent.py:2389: [invalid-argument-type] invalid-argument-type: Argument to function `_is_oauth_token` is incorrect: Expected `str`, found `(Unknown & ~AlwaysFalsy) | (str & ~AlwaysFalsy) | (dict[str, str] & ~AlwaysFalsy) | ... omitted 5 union elements`
run_agent.py:12341: [invalid-argument-type] invalid-argument-type: Argument to function `len` is incorrect: Expected `Sized`, found `(str & ~AlwaysFalsy) | (dict[Unknown, Unknown] & ~AlwaysFalsy) | (Any & ~AlwaysFalsy) | ... omitted 4 union elements`
run_agent.py:11882: [invalid-argument-type] invalid-argument-type: Argument to function `normalize_usage` is incorrect: Expected `str | None`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | ... omitted 3 union elements`
run_agent.py:6923: [invalid-argument-type] invalid-argument-type: Argument to function `get_provider_request_timeout` is incorrect: Expected `str`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | ... omitted 3 union elements`
run_agent.py:8180: [invalid-argument-type] invalid-argument-type: Argument to function `get_transport` is incorrect: Expected `str`, found `str | Unknown | dict[Unknown | str, Unknown | str | dict[str, str]] | ... omitted 3 union elements`
tests/agent/test_codex_cloudflare_headers.py:163: [unresolved-attribute] unresolved-attribute: Attribute `get` is not defined on `str & ~AlwaysFalsy`, `int & ~AlwaysFalsy` in union `(Unknown & ~AlwaysFalsy) | (str & ~AlwaysFalsy) | (dict[str, str] & ~AlwaysFalsy) | ... omitted 4 union elements`
run_agent.py:2437: [invalid-argument-type] invalid-argument-type: Argument to function `get_model_context_length` is incorrect: Expected `str`, found `str | dict[str, str] | Any | ... omitted 4 union elements`
run_agent.py:9015: [unresolved-attribute] unresolved-attribute: Attribute `lower` is not defined on `dict[Unknown | str, Unknown | str | dict[str, str]] & ~AlwaysFalsy`, `int & ~AlwaysFalsy`, `dict[Unknown, Unknown] & ~AlwaysFalsy` in union `(str & ~AlwaysFalsy) | (Unknown & ~AlwaysFalsy) | (dict[Unknown | str, Unknown | str | dict[str, str]] & ~AlwaysFalsy) | ... omitted 4 union elements`
tests/run_agent/test_provider_attribution_headers.py:130: [unsupported-operator] unsupported-operator: Operator `not in` is not supported between objects of type `Literal["X-OpenRouter-Cache"]` and `Unknown | str | dict[str, str] | ... omitted 4 union elements`
run_agent.py:2160: [invalid-argument-type] invalid-argument-type: Argument to function `query_ollama_num_ctx` is incorrect: Expected `str`, found `(str & ~AlwaysFalsy) | (dict[str, str] & ~AlwaysFalsy) | (Any & ~AlwaysFalsy) | ... omitted 5 union elements`
... and 1 more

Unchanged: 3934 pre-existing issues carried over.

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

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comp/tui Terminal UI (ui-tui/ + tui_gateway/) P3 Low — cosmetic, nice to have type/feature New feature or request

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