feat(comms): add durable provider-native delivery

[tangemicioglu]

Description

Adds provider-native communication delivery plumbing for Wardian agents across live PTY submission, mailbox drain, workflow live routing, remote control sends, and headless provider execution.

Follow-up fixes on this branch also:

• Drain queued live deliveries after telemetry-derived idle readiness.
• Require workflow structured replies to be executed through wardian reply, not printed as transcript markers.
• Preserve scheduled workflow instance identity so one running schedule does not make sibling schedules for the same blueprint appear running.
• Render Workflow History as one chronological run stream so newer failed or completed runs are not hidden behind older workflow summaries.
• Keep live workflow waits alive when provider watch evidence rolls over before the structured reply arrives.
• Mark live workflow agents Processing only after confirmed prompt delivery, using the same post-delivery path as normal sends.

Key pieces:

• Durable delivery attempts and interaction records for live-surface and headless-provider delivery.
• Shared live-surface delivery service with provider-aware submit states, retry-safe mailbox failure handling, and redacted persisted prompt bodies.
• Canonical submit_sent_unconfirmed delivery state across backend, CLI/frontend DTOs, docs, and tests.
• Provider-native communication spec plus command-panel and IPC/developer documentation updates.

Related Issues

Fixes #526

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

Screenshot Evidence

How Has This Been Tested?

Fresh local verification after the workflow monitor fixes:

• npm run lint
• npm run test - 112 files, 1044 tests passed
• npm run build
• npm run test -- WorkflowMonitor.test.tsx - 16 tests passed
• npm run check:frontend-screenshot -- origin/main HEAD

Fresh local backend verification after the live workflow fixes:

• cd src-tauri && cargo test live_agent_reply_wait_survives_watch_cursor_rollover - failed red before the fix, passed after
• cd src-tauri && cargo test workflow_live_surface_request_marks_prompt_started_after_delivery - failed red before the fix, passed after
• cd src-tauri && cargo test workflow::runner::tests::live_agent - 6 tests passed
• cd src-tauri && cargo test - 903 unit tests, 7 mock provider tests, 1 workflow executor test passed
• cd src-tauri && cargo clippy
• cd src-tauri && cargo check
• git diff --check
• git diff --cached --check

Earlier local backend verification on this branch:

• cd src-tauri && cargo test run_summary_carries_schedule_id_from_invocation
• Autoreview workflow 1780878073370-aa0cffeb converged with no unresolved accepted findings.

Checklist:

• My code follows the stylistic guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I checked docs/developer/docs-maintenance.md for user docs, public links, release notes, and screenshot refresh needs
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• (Frontend changes) Feature-specific screenshot evidence is embedded above, or not applicable

[codecov]

Codecov Report

❌ Patch coverage is 75.15323% with 527 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src-tauri/src/manager/telemetry.rs	51.52%	270 Missing ⚠️
src-tauri/src/delivery/live_surface.rs	71.54%	105 Missing ⚠️
src-tauri/src/workflow/runner.rs	73.57%	37 Missing ⚠️
src-tauri/src/control.rs	87.19%	31 Missing ⚠️
src-tauri/src/workflow/runs.rs	41.46%	24 Missing ⚠️
src-tauri/src/workflow/schedule.rs	0.00%	24 Missing ⚠️
src-tauri/src/commands/terminal.rs	0.00%	10 Missing ⚠️
src-tauri/src/remote/operations.rs	0.00%	9 Missing ⚠️
src-tauri/src/delivery/headless_process.rs	97.07%	7 Missing ⚠️
crates/wardian-core/src/db.rs	97.41%	4 Missing ⚠️
... and 3 more

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