refactor(backend): one conductor — single Orchestrator class, rename 6 misnamed '*Orchestrator' classes #5040

The Rule

In an orchestra, there is only one conductor.

Today the codebase has 8 classes named `*Orchestrator`. Only one of them is actually THE orchestrator (the multi-agent conductor). The rest are specialized coordinators/dispatchers/runners that misappropriate the name, which (a) dilutes the concept and (b) makes it ambiguous which one callers should reach for.

Inventory

Also rename files that contain them (e.g., `services/slm/deployment_orchestrator.py` → `services/slm/deployment.py`; `services/advanced_workflow/orchestrator.py` → `services/advanced_workflow/coordinator.py`).

Non-negotiable requirements

1. Zero functionality loss. Every public method on Docs improvements #1 and Docs improvements #2 must survive the merge. No behavior changes.
2. Function uniqueness. When two classes have the same method (e.g., both Docs improvements #1 and Docs improvements #2 define `_update_agent_performance`), diff them, pick the canonical implementation, and deduplicate. Extract to a shared helper if both versions have value.
3. Function reusability. Logic shared across multiple classes (agent-performance tracking, parallel execution patterns) should live in one place and be imported — not copy-pasted.

Method-overlap audit (confirmed duplicates between #1 and #2)

• `_update_agent_performance` — defined in both
• Agent coordination / workflow planning / performance tracking — overlapping conceptual surface

Out of scope (for now)

• `api/orchestration.py` — FastAPI router, keep as-is (it routes to THE orchestrator)
• `autobot-backend/orchestration/` package — internal extracted modules (types, executor, planner); keep
• Further unification of Dev new gui #5/Refactor backend API and remove unused variables #6/Dev new gui #7/Analysis report 20250803 #8 with Docs improvements #1 — they are genuinely specialized, not misnamed duplicates

Acceptance criteria

• Exactly one class named `Orchestrator` in `autobot-backend/` (grep check)
• All other classes renamed per table above
• All file renames applied
• All 34+ importers updated
• `pytest autobot-backend/tests/orchestration/` passes (34 tests)
• `python -m py_compile` passes on every modified file
• Zero `TODO`/commented-out code in the refactor

Subsumes

• refactor(backend): unify EnhancedMultiAgentOrchestrator into ConsolidatedOrchestrator (Phase 4) #5037 (unify EnhancedMultiAgent into ConsolidatedOrchestrator) — will be closed by this PR
• discovery(backend): rename ResourceFactory.get_enhanced_orchestrator → get_orchestrator (stale terminology) #5038 (rename `ResourceFactory.get_enhanced_orchestrator`) — will be closed by this PR
• discovery(backend): 12 test files use 'ConsolidatedOrchestrator as Orchestrator' alias #5039 (test file alias cleanup) — will be closed by this PR

Related

• refactor(backend): complete orchestrator consolidation (7→4 target) #4048 (closed by refactor(backend): consolidate orchestrator files 5→4 (#4048) #5027) — Phase 2+3 partial consolidation (5→4 files)
• refactor(backend): consolidate 7 orchestrator files to 4 #3393 (closed) — original consolidation