Commit graph

774 commits

Author SHA1 Message Date
rcourtman
7f7edfceb4 test: expand backend coverage 2026-01-25 21:08:44 +00:00
rcourtman
f2648891a9 chore: remove unused utility functions
Remove createColumn helper from responsive types and getPulsePort
from URL utilities. Both were exported but never used anywhere.
2026-01-24 23:23:27 +00:00
rcourtman
ff2841a5c6 Fix patrol scoping and config propagation 2026-01-24 23:07:55 +00:00
rcourtman
de2cb7a29b chore: remove deprecated GetAvailableModels and ModelInfo
- Remove deprecated config.ModelInfo type (use providers.ModelInfo)
- Remove deprecated GetAvailableModels function (always returned nil)
- Remove associated test
- Update AISettingsResponse to use providers.ModelInfo
2026-01-24 23:00:16 +00:00
rcourtman
9072b8eaa8 feat: enhance API router with multi-tenant authorization
Router & Middleware:
- Add auth context middleware for user/token extraction
- Add tenant middleware with authorization checking
- Refactor middleware chain ordering for proper isolation
- Add router helpers for common patterns

Authentication & SSO:
- Enhance auth with tenant-aware context
- Update OIDC, SAML, and SSO handlers for multi-tenant
- Add RBAC handler improvements
- Add security enhancements

New Test Coverage:
- API foundation tests
- Auth and authorization tests
- Router state and general tests
- SSO handler CRUD tests
- WebSocket isolation tests
- Resource handler tests
2026-01-24 22:42:23 +00:00
rcourtman
27f1a11acb feat: add AI Intelligence system with investigation and forecasting
Major new AI capabilities for infrastructure monitoring:

Investigation System:
- Autonomous finding investigation with configurable autonomy levels
- Investigation orchestrator with rate limiting and guardrails
- Safety checks for read-only mode enforcement
- Chat-based investigation with approval workflows

Forecasting & Remediation:
- Trend forecasting for resource capacity planning
- Remediation engine for generating fix proposals
- Circuit breaker for AI operation protection

Unified Findings:
- Unified store bridging alerts and AI findings
- Correlation and root cause analysis
- Incident coordinator with metrics recording

New Frontend:
- AI Intelligence page with patrol controls
- Investigation drawer for finding details
- Unified findings panel with actions

Supporting Infrastructure:
- Learning store for user preference tracking
- Proxmox event ingestion and correlation
- Enhanced patrol with investigation triggers
2026-01-24 22:41:43 +00:00
rcourtman
c4ca169e2b feat: add multi-tenant isolation foundation (disabled by default)
Implements multi-tenant infrastructure for organization-based data isolation.
Feature is gated behind PULSE_MULTI_TENANT_ENABLED env var and requires
Enterprise license - no impact on existing users.

Core components:
- TenantMiddleware: extracts org ID, validates access, 501/402 responses
- AuthorizationChecker: token/user access validation for organizations
- MultiTenantChecker: WebSocket upgrade gating with license check
- Per-tenant audit logging via LogAuditEventForTenant
- Organization model with membership support

Gating behavior:
- Feature flag disabled: 501 Not Implemented for non-default orgs
- Flag enabled, no license: 402 Payment Required
- Default org always works regardless of flag/license

Documentation added: docs/MULTI_TENANT.md
2026-01-23 21:42:27 +00:00
rcourtman
4c19fa3c1b fix: resolve btrfs disk summing (#1158), podman disable flag (#1151), and diagnostics path (#1155) 2026-01-23 19:24:38 +00:00
rcourtman
508c9f88f6 fix: Support partial updates for PBS nodes. Related to #1105
Allow updating PBS node settings (like excludeDatastores) without
requiring host to be resent. Match the behavior of PVE/PMG handlers
which only validate and update fields when provided.

Previously, PUT /api/config/nodes/{pbs-id} with just {excludeDatastores: [...]}
would fail with 'host is required' because the handler always called
normalizeNodeHost regardless of whether a new host was provided.
2026-01-23 00:13:28 +00:00
rcourtman
1ac53fa9f1 test: add stream, restart, and fallback tests for AI handlers and providers 2026-01-22 22:33:33 +00:00
rcourtman
8bf31214f5 feat: enhance API handlers and router with new endpoints
- Add new AI handler endpoints
- Enhance diagnostics API
- Improve router configuration
2026-01-22 22:31:24 +00:00
rcourtman
f2541b0d6c Refactor: Multi-tenancy support for API and License handlers
- Updated LicenseHandlers and LicenseService to be context/tenant aware
- Refactored API router and middleware to support tenant-scoped license checks
- Updated associated tests for context-aware handlers
2026-01-22 16:42:39 +00:00
rcourtman
289d95374f feat: add multi-tenancy foundation (directory-per-tenant)
Implements Phase 1-2 of multi-tenancy support using a directory-per-tenant
strategy that preserves existing file-based persistence.

Key changes:
- Add MultiTenantPersistence manager for org-scoped config routing
- Add TenantMiddleware for X-Pulse-Org-ID header extraction and context propagation
- Add MultiTenantMonitor for per-tenant monitor lifecycle management
- Refactor handlers (ConfigHandlers, AlertHandlers, AIHandlers, etc.) to be
  context-aware with getConfig(ctx)/getMonitor(ctx) helpers
- Add Organization model for future tenant metadata
- Update server and router to wire multi-tenant components

All handlers maintain backward compatibility via legacy field fallbacks
for single-tenant deployments using the "default" org.
2026-01-22 13:39:06 +00:00
rcourtman
c75972d57c Fix mock metrics history and guest drawer controls 2026-01-22 09:39:53 +00:00
rcourtman
a55bdb7a3a feat(api): security and metrics history improvements
- Require admin + settings:write scope for setup-script-url endpoint
- Add license enforcement for long-term metrics (30d/90d require Pro)
- Add downsampling step calculation for metrics history queries
- Add isContainerSSHRestricted helper for SSH restriction checks
- Clean up temperature proxy references from config handlers
- Minor OIDC and rate limit improvements
2026-01-22 00:44:12 +00:00
rcourtman
633eea83db refactor: remove deprecated config fields
- Remove unused envconfig tags (BackendHost, FrontendHost, etc.)
- Remove APITokenEnabled (infer from token count)
- Remove IframeEmbeddingAllow, Port, Debug, ConcurrentPolling
- Clean up temperature proxy comments from ClusterEndpoint
- Simplify API token diagnostic to use config field directly
2026-01-22 00:43:27 +00:00
rcourtman
bb47e1831c security: SSRF protection for webhook URLs
- Add DNS resolution validation to block webhooks to internal IPs
- Validate hostname resolves before accepting webhook URL
- Block metadata endpoints (AWS, GCP, Azure)
- Block localhost, private IPs, and reserved ranges
- Add context timeout for DNS lookups (2s)
2026-01-22 00:42:23 +00:00
rcourtman
222c88f33c chore: Mac-compatible dev scripts
- hot-dev.sh: Fix hostname -I for macOS, use ifconfig instead
- hot-dev.sh: Fix PULSE_AUDIT_DIR for mock mode
- hot-dev.sh: Use PULSE_REPOS_DIR for Pro module detection
- dev-check.sh: Fix pgrep -c (not supported on macOS)
- dev-check.sh: Use /tmp/pulse-debug.log on macOS instead of journalctl
- Update internal/api docs to use env var paths
2026-01-22 00:30:15 +00:00
rcourtman
7599915b8f refactor(api): remove sensor proxy config from API handlers
- config_handlers.go: remove proxy configuration endpoints
- system_settings.go: remove proxy-related settings
- rate_limit_config.go: update rate limit configuration
- Update related test files
2026-01-21 12:02:46 +00:00
rcourtman
d306e02151 fix: remove unused imports and obsolete tests in API handlers
- diagnostics.go: remove unused path/filepath and syscall imports
- router.go: remove unused errors import
- diagnostics_test.go: remove tests for deleted functions
  (normalizeHostForComparison, matchInstanceNameByHost)

These changes fix build errors after sensor proxy removal.
2026-01-21 11:59:41 +00:00
rcourtman
d4a6c0d2e8 refactor: remove legacy pulse-sensor-proxy temperature monitoring
The sensor proxy approach for temperature monitoring has been superseded
by the unified agent architecture where host agents report temperature
data directly. This removes:

- cmd/pulse-sensor-proxy/ - standalone proxy daemon
- internal/tempproxy/ - client library
- internal/api/*temperature_proxy* - API handlers and tests
- internal/api/sensor_proxy_gate* - feature gate
- internal/monitoring/*proxy_test* - proxy-specific tests
- scripts/*sensor-proxy* - installation and management scripts
- security/apparmor/, security/seccomp/ - proxy security profiles

Temperature monitoring remains available via the unified agent approach.
2026-01-21 11:59:04 +00:00
rcourtman
cdcd50c8c1 fix: persist full-width layout preference on server. Related to #1130
Full-width mode now syncs to server like dark mode, ensuring the setting
persists across Proxmox helper script updates. Previously only used
localStorage which gets cleared on some update methods.
2026-01-20 23:01:33 +00:00
rcourtman
eec4bcf33e fix(test): update API test expectations for status codes and response format 2026-01-20 18:12:58 +00:00
rcourtman
ecc31730f6 Remove OpenCode references 2026-01-20 16:56:41 +00:00
rcourtman
96b7370f7b test: improve coverage for API, AI, Alerts, and Frontend Utils
- Add comprehensive tests for internal/api/config_handlers.go (Phases 1-3)
- Improve test coverage for AI tools, chat service, and session management
- Enhance alert and notification tests (ResolvedAlert, Webhook)
- Add frontend unit tests for utils (searchHistory, tagColors, temperature, url)
- Add proximity client API tests
2026-01-20 15:52:39 +00:00
rcourtman
ee63d438cc docs: standardize markdown syntax and remove deprecated sensor-proxy docs 2026-01-20 09:43:49 +00:00
rcourtman
a6a8efaa65 test: Add comprehensive test coverage across packages
New test files with expanded coverage:

API tests:
- ai_handler_test.go: AI handler unit tests with mocking
- agent_profiles_tools_test.go: Profile management tests
- alerts_endpoints_test.go: Alert API endpoint tests
- alerts_test.go: Updated for interface changes
- audit_handlers_test.go: Audit handler tests
- frontend_embed_test.go: Frontend embedding tests
- metadata_handlers_test.go, metadata_provider_test.go: Metadata tests
- notifications_test.go: Updated for interface changes
- profile_suggestions_test.go: Profile suggestion tests
- saml_service_test.go: SAML authentication tests
- sensor_proxy_gate_test.go: Sensor proxy tests
- updates_test.go: Updated for interface changes

Agent tests:
- dockeragent/signature_test.go: Docker agent signature tests
- hostagent/agent_metrics_test.go: Host agent metrics tests
- hostagent/commands_test.go: Command execution tests
- hostagent/network_helpers_test.go: Network helper tests
- hostagent/proxmox_setup_test.go: Updated setup tests
- kubernetesagent/*_test.go: Kubernetes agent tests

Core package tests:
- monitoring/kubernetes_agents_test.go, reload_test.go
- remoteconfig/client_test.go, signature_test.go
- sensors/collector_test.go
- updates/adapter_installsh_*_test.go: Install adapter tests
- updates/manager_*_test.go: Update manager tests
- websocket/hub_*_test.go: WebSocket hub tests

Library tests:
- pkg/audit/export_test.go: Audit export tests
- pkg/metrics/store_test.go: Metrics store tests
- pkg/proxmox/*_test.go: Proxmox client tests
- pkg/reporting/reporting_test.go: Reporting tests
- pkg/server/*_test.go: Server tests
- pkg/tlsutil/extra_test.go: TLS utility tests

Total: ~8000 lines of new test code
2026-01-19 19:26:18 +00:00
rcourtman
dc16c94766 fix: Add robustness improvements to approval, auth, and server
approval/store.go:
- Make Approve() idempotent - return success if already approved
- Handles double-clicks and race conditions gracefully

auth.go:
- Add dev mode admin bypass (disabled by default)
- When ALLOW_ADMIN_BYPASS=1, sets X-Authenticated-User header

server.go:
- Call router.StopOpenCodeAI() during shutdown
- Ensures AI service stops cleanly on server termination
2026-01-19 19:24:45 +00:00
rcourtman
f478046696 refactor(api): Add interfaces to handlers for testability
Extract interfaces from concrete monitor type dependencies:

alerts.go:
- Add AlertManager, ConfigPersistence, AlertMonitor interfaces
- Change AlertHandlers to accept AlertMonitor interface

notifications.go:
- Add NotificationManager, NotificationConfigPersistence interfaces
- Add NotificationMonitor interface
- Change NotificationHandlers to accept NotificationMonitor interface

updates.go:
- Add UpdatesMonitor interface
- Change UpdatesHandlers to accept interface

audit_handlers.go:
- Update to use interface-based injection

profile_suggestions.go:
- Minor interface alignment

Benefits:
- Handlers can now be tested with mock implementations
- Decouples handlers from concrete monitoring.Monitor type
- Works with monitor_wrappers.go added in previous commit
2026-01-19 19:21:46 +00:00
rcourtman
ffb8928dbf refactor(api): Update handlers for native AI chat service
Adapts API handlers to use the new native chat service:

ai_handler.go:
- Replace opencode.Service with chat.Service
- Add AIService interface for testability
- Add factory function for service creation (mockable)
- Update provider wiring to use tools package types

ai_handlers.go:
- Add Notable field to model list response
- Simplify command approval - execution handled by agentic loop
- Remove inline command execution from approval endpoint

router.go:
- Update imports: mcp -> tools, opencode -> chat
- Add monitor wrapper types for cleaner dependency injection
- Update patrol wiring for new chat service

agent_profiles:
- Rename agent_profiles_mcp.go -> agent_profiles_tools.go
- Update imports for tools package

monitor_wrappers.go:
- New file with wrapper types for alert/notification monitors
- Enables interface-based dependency injection
2026-01-19 19:20:00 +00:00
rcourtman
432f13b6f5 feat(ai): add Docker update management MCP tools
Add three new MCP tools for Docker container update management:
- pulse_list_docker_updates: list containers with pending updates
- pulse_check_docker_updates: trigger update check on a host
- pulse_update_docker_container: apply update with approval workflow

Changes:
- Add UpdatesProvider interface to executor.go
- Add response types to data_types.go
- Add UpdatesMCPAdapter to adapters.go
- Register tools and handlers in tools_infrastructure.go
- Add SetUpdatesProvider() to service.go
- Wire provider in router.go wireOpenCodeProviders()
2026-01-17 15:47:36 +00:00
rcourtman
4cea85ec97 feat(mcp): expand MCP tools and add session management APIs
New API endpoints:
- POST /api/ai/sessions/{id}/summarize - Compress context
- GET /api/ai/sessions/{id}/diff - Get file changes
- POST /api/ai/sessions/{id}/fork - Branch conversation
- POST /api/ai/sessions/{id}/revert - Undo changes
- POST /api/ai/sessions/{id}/unrevert - Restore reverted changes

MCP provider wiring:
- Storage, backup, disk health providers
- Metrics history, baseline, pattern detection
- Findings manager and metadata updater

Tool improvements:
- pulse_get_topology: Unified infrastructure view
- Improved tool descriptions with usage examples
- Better license checking with logging
2026-01-17 14:43:58 +00:00
rcourtman
3096ec53b5 fix: preserve alert activation state when saving config. Related to #1096 2026-01-16 14:24:02 +00:00
rcourtman
035436ad6e fix: add mutex to prevent concurrent map writes in Docker agent CPU tracking
The agent was crashing with 'fatal error: concurrent map writes' when
handleCheckUpdatesCommand spawned a goroutine that called collectOnce
concurrently with the main collection loop. Both code paths access
a.prevContainerCPU without synchronization.

Added a.cpuMu mutex to protect all accesses to prevContainerCPU in:
- pruneStaleCPUSamples()
- collectContainer() delete operation
- calculateContainerCPUPercent()

Related to #1063
2026-01-15 21:10:55 +00:00
rcourtman
8c7581d32c feat(profiles): add AI-assisted profile suggestions
Add ability for users to describe what kind of agent profile they need
in natural language, and have AI generate a suggestion with name,
description, config values, and rationale.

- Add ProfileSuggestionHandler with schema-aware prompting
- Add SuggestProfileModal component with example prompts
- Update AgentProfilesPanel with suggest button and description field
- Streamline ValidConfigKeys to only agent-supported settings
- Update profile validation tests for simplified schema
2026-01-15 13:24:18 +00:00
rcourtman
9b49d3171d feat(pbs): add datastore exclusion to reduce PBS log noise
Users with removable/unmounted datastores (e.g., external HDDs for
offline backup) experienced excessive PBS log entries because Pulse
was querying all datastores including unavailable ones.

Added `excludeDatastores` field to PBS node configuration that accepts
patterns to exclude specific datastores from monitoring:
- Exact names: "exthdd1500gb"
- Prefix patterns: "ext*"
- Suffix patterns: "*hdd"
- Contains patterns: "*removable*"

Pattern matching is case-insensitive.

Fixes #1105
2026-01-14 12:26:18 +00:00
rcourtman
3e74e689cd fix(api): increase Docker agent report size limit from 512KB to 2MB
Users with 100+ containers were hitting the payload size limit,
causing "Failed to decode request body" 400 errors. This aligns
the Docker agent limit with the Kubernetes agent limit (2MB).

Fixes #1104
2026-01-14 12:20:39 +00:00
rcourtman
038b57ee43 feat(ai): proxy OpenCode API paths for iframe embedding
OpenCode's frontend uses window.location.origin for API calls. When
embedded in Pulse's iframe, this points to Pulse instead of OpenCode.

This commit proxies OpenCode's API paths through Pulse:
- /global/, /session/, /tui/, /config/, /file/, /find/, /instance/,
  /mcp/, /permission/, /project/, /provider/, /pty/, /question/,
  /experimental/

Changes:
- router.go: Add OpenCode API paths to route check and register handlers
- ai_handler.go: Add HandleOpenCodeAPI to proxy requests to OpenCode
- vite.config.ts: Add proxy entries for OpenCode API paths
- AIChat.tsx: Revert to iframe approach now that proxying works
- ThinkingBlock.tsx: Make collapsible for better UX
2026-01-14 10:52:33 +00:00
rcourtman
7f9995adf3 fix(ai): rewrite OpenCode asset paths for iframe embedding
OpenCode's HTML uses absolute paths like /assets/... for static files.
When embedded in Pulse's iframe, these paths don't go through the
/opencode/ proxy and fail to load.

Modified the proxy's ModifyResponse to rewrite src="/" and href="/"
attributes in HTML responses to include the /opencode/ prefix, ensuring
all assets load correctly through the proxy.
2026-01-14 10:35:37 +00:00
rcourtman
875d244b66 fix(ai): allow OpenCode UI to be embedded in iframe
The OpenCode reverse proxy now properly modifies response headers to
allow iframe embedding within Pulse's AI panel:

- ai_handler.go: Add ModifyResponse to strip X-Frame-Options and modify
  CSP frame-ancestors from OpenCode's responses
- security.go: Skip frame-related security headers for /opencode/ paths
  since the proxy manages its own headers

This fixes the "refused to connect" error when opening the AI sidebar.
2026-01-14 10:28:30 +00:00
rcourtman
316c3cbb6f feat(ai): embed OpenCode web UI in Pulse AI panel
Replace custom Chat components with an iframe that embeds OpenCode's
native web UI. This provides a more polished experience and automatically
benefits from OpenCode improvements.

Changes:
- Add reverse proxy for /opencode/ route to OpenCode's web server
- Simplify AIChat component to iframe wrapper with header
- Add GetBaseURL() method to OpenCode service
- Configure Vite proxy for development

The Pulse Pro value proposition is now: managed OpenCode deployment
with rich MCP tools that provide infrastructure context.
2026-01-14 09:53:02 +00:00
rcourtman
9cd53814a3 feat(alerts): add per-volume disk thresholds for host agents
Allow users to set custom disk usage thresholds per mounted filesystem
on host agents, rather than applying a single threshold to all volumes.

This addresses NAS/NVR use cases where some volumes (e.g., NVR storage)
intentionally run at 99% while others need strict monitoring.

Backend:
- Check for disk-specific overrides before using HostDefaults.Disk
- Override key format: host:<hostId>/disk:<mountpoint>
- Support both custom thresholds and disable per-disk

Frontend:
- Add 'hostDisk' resource type
- Add "Host Disks" collapsible section in Thresholds → Hosts tab
- Group disks by host for easier navigation

Closes #1103
2026-01-13 23:38:20 +00:00
rcourtman
d73e57af86 Initialize SQLite audit logger for Pro license with audit_logging feature
The audit logging feature was showing the UI for Pro users but the
SQLiteLogger was never actually initialized - it fell back to the
ConsoleLogger which only writes to console and returns empty arrays
for queries.

This fix:
- Adds initAuditLoggerIfLicensed() helper to license_handlers.go
- Calls it when loading a persisted license at startup
- Calls it when activating a new license via API
- Creates SQLiteLogger with 90-day default retention when audit_logging
  feature is enabled

The audit.db will be created in {dataDir}/audit/ when Pro is licensed.
2026-01-13 10:06:48 +00:00
rcourtman
b177812fd3 revert: remove accidentally committed WIP OpenCode changes
Reverts unintended changes from 4e064aa0 that broke the frontend build.
The workflow fix for cmd/pulse package build remains intact.
2026-01-13 09:15:42 +00:00
rcourtman
4e064aa0cc fix: build entire cmd/pulse package, not just main.go
The static binary build was only compiling main.go, missing bootstrap.go
and config.go which define osExit, bootstrapTokenCmd, and configCmd.
2026-01-13 09:06:21 +00:00
rcourtman
da6ee7b1a6 feat(sso): implement SAML session storage for Single Logout support
- Add SAML session fields (ProviderID, NameID, SessionIndex) to
  SessionData and sessionPersisted structs for persistence
- Add CreateSAMLSession method to store SAML-authenticated sessions
- Add GetSAMLSessionInfo method to retrieve SAML session data
- Update establishSAMLSession to properly store SAML info instead
  of delegating to OIDC session creation
- Implement getSAMLSessionInfo to retrieve session info for SLO

This enables proper SAML Single Logout by storing the NameID and
SessionIndex from the SAML assertion, which are required to construct
valid LogoutRequest messages to the IdP.
2026-01-12 16:37:07 +00:00
rcourtman
97701297c4 feat(sso): add SAML 2.0 and multi-provider SSO support
- Add SAML 2.0 Service Provider implementation using crewjam/saml
- Support IdP metadata from URL or raw XML
- Add multi-provider SSO configuration model
- Implement provider management API (CRUD operations)
- Add provider connection testing endpoint
- Add IdP metadata preview endpoint
- Add SSOProvidersPanel component for settings UI
- Support attribute-based role mapping (groups → Pulse roles)

API endpoints:
- GET/POST /api/security/sso/providers - List/create providers
- GET/PUT/DELETE /api/security/sso/providers/{id} - Provider CRUD
- POST /api/security/sso/providers/test - Test connection
- POST /api/security/sso/providers/metadata/preview - Preview metadata
- /api/saml/{id}/login, /acs, /metadata, /logout, /slo - SAML endpoints
2026-01-12 15:19:59 +00:00
rcourtman
b2a6cd0fa3 fix(agent): add FreeBSD platform support to agent download and UI (#1051)
- Add freebsd-amd64 and freebsd-arm64 to normalizeUnifiedAgentArch()
  so the download endpoint serves FreeBSD binaries when requested
- Add FreeBSD/pfSense/OPNsense platform option to agent setup UI
  with note about bash installation requirement
- Add FreeBSD test cases to unified_agent_test.go

Fixes installation on pfSense/OPNsense where users were getting 404
errors because the backend didn't recognize the freebsd-amd64 arch
parameter from install.sh.
2026-01-11 23:51:12 +00:00
rcourtman
f527e6ebd0 docs: fix Kubernetes DaemonSet deployment guide
Fixes #1091 - addresses all three documentation issues reported:

1. Binary path: Changed from /usr/local/bin/pulse-agent (which doesn't
   exist in the main image) to /opt/pulse/bin/pulse-agent-linux-amd64

2. PULSE_AGENT_ID: Added to example and documented why it's required
   for DaemonSets (prevents token conflicts when all pods share one
   API token)

3. Resource visibility flags: Added PULSE_KUBE_INCLUDE_ALL_PODS and
   PULSE_KUBE_INCLUDE_ALL_DEPLOYMENTS to example, with explanation
   of the default behavior (show only problematic resources)

Also added tolerations, resource requests/limits, and ARM64 note.
2026-01-11 21:43:23 +00:00
rcourtman
9cd79daa68 fix(hostagent): prevent data mixing when multiple nodes share hostname
When multiple PVE nodes have the same hostname (e.g., both named "pve"),
auto-linking would incorrectly link all host agents to the first matching
node, causing temperature and sensor data to be mixed/duplicated.

Changes:
- findLinkedProxmoxEntity now detects hostname collisions and refuses
  to auto-link, logging a warning instead
- Added manual link API endpoint (POST /api/agents/host/link) so users
  can explicitly link agents to the correct nodes
- Added State.LinkHostAgentToNode for bidirectional manual linking

Fixes #1081
2026-01-10 23:12:51 +00:00