Update technical_reference: add rendezvous module, HohmannTransfer struct, and reset_spacecraft_tracking step

docs/technical_reference.md

@@ -11,6 +11,7 @@ Modular C-style C++ (structs/functions, no classes). Module dependencies:
 ```
 Main → Simulation → Orbital Mechanics → Physics
       → Maneuver
+      → Rendezvous
       → Config Loader
 ```
 
@@ -57,6 +58,9 @@ Similar to CelestialBody but without radius or SOI. Supports standalone (parent_
 ### Maneuver
 Impulsive burn: name, craft_index, direction, delta_v, trigger_type, trigger_value, scheduled_dt, executed flag, executed_time.
 
+### HohmannTransfer
+Hohmann transfer calculation result: dv1 (first burn delta-v), dv2 (second burn delta-v), transfer_time (half-period of transfer ellipse), true_anomaly_2 (true anomaly at second burn, typically π).
+
 ### SimulationState
 Top-level container: arrays of bodies/spacecraft/maneuvers (with counts and capacities), time, dt, config_name.
 
@@ -137,6 +141,28 @@ True anomaly triggers must execute at precise orbital position:
 
 **Wraparound handling**: When current_nu > 5.0 and future_nu < 1.0, detect 2π→0 crossing at periapsis.
 
+### Hohmann Transfer
+`calculate_hohmann_transfer()` computes optimal two-burn transfer between two circular orbits using the vis-viva equation. Transfer time equals half the period of the transfer ellipse.
+
+## Rendezvous Module
+
+Handles orbital rendezvous planning and execution via Hohmann transfers and phasing maneuvers.
+
+**Hohmann Transfer Planning**:
+- `calculate_required_separation_for_hohmann()` - computes ideal angular separation between chaser and target at first burn
+- `calculate_wait_time_for_hohmann()` - determines wait time before starting transfer (positive = wait, negative = late)
+- `calculate_next_hohmann_wait_time()` - like above but always returns non-negative by advancing to next phasing opportunity
+- `calculate_relative_orbit_period()` - time between consecutive phasing opportunities
+
+**Maneuver Creation**:
+- `create_hohmann_departure_maneuver()` - adds prograde burn to enter transfer orbit (supports true anomaly or immediate trigger)
+- `create_hohmann_arrival_maneuver()` - adds circularization burn to match target orbit (triggered at target radius)
+
+**Verification**:
+- `verify_hohmann_transfer_orbit()` - checks if current orbit matches expected Hohmann transfer parameters
+- `validate_hohmann_transfer_parameters()` - validates transfer parameters before calculation
+- `hohmann_transfer_complete()` - checks if transfer time has elapsed and spacecraft is at target radius
+
 ## Simulation Loop
 
 **Initialization**:
@@ -147,12 +173,13 @@ True anomaly triggers must execute at precise orbital position:
 5. Main loop begins
 
 **Main Loop Order**:
-1. update_bodies_physics() - SOI checks, drift detection, propagation
+1. reset_spacecraft_tracking() - reset spacecraft handled flags
-2. compute_global_coordinates()
+2. update_bodies_physics() - SOI checks, drift detection, propagation
-3. execute_pending_maneuvers()
+3. compute_global_coordinates()
-4. update_spacecraft_physics()
+4. execute_pending_maneuvers()
-5. compute_spacecraft_globals()
+5. update_spacecraft_physics()
-6. time += dt
+6. compute_spacecraft_globals()
+7. time += dt
 
 **Body Physics Per-Frame**:
 - Check SOI via find_dominant_body()