feat(fp): solid player car that shoves traffic and knocks props over

README.md

@@ -83,7 +83,7 @@ Founding builds made before anyone lives in the city, and runs with residents of
 
 `godot --path .` starts in **first person** at street level. Set `GRIDFALL_VIEW=orbit` to play the orbit city builder with the full HUD described below.
 
-- **First person:** WASD or the arrow keys walk, Shift runs, mouse to look (click to capture the pointer), `]` and `[` change time speed (1x, 2x, 4x, 8x), `T` skips to the next morning, `Esc` pauses, `F1` hides the HUD, `F5` saves, `F9` loads. `F` by a car gets in (W/S throttle and brake or reverse, A/D steer, Space handbrake, V switches chase and driver view) and `F` again gets out once it slows down. `B` opens the build phone: `1`-`6` pick road, homes, shops, industry, a building (mouse wheel picks which) or bulldoze, left click places on the tile ahead (roads and zones take a start and an end click), right click undoes the start. Each order is paid by the district that owns the land, as if its mayor had ordered it, and one of your two building crews builds it in real time (see Staged construction). The phone says how many crews are free and how long the order takes, a card under the top bar counts down your orders, and `E` on a worker gets a word about the job. The AI activity feed (top right) shows each mayor turn, council ruling, Chaos Director pick, grid order and Gazette front page as it lands. A card shows who decided, the model they run on, whether the answer came live, from a replay, from a fallback or from the offline planner, what they did and why. On foot the mayors take their turns spread over the day. A decision with a place raises a light beacon there. `J` cycles the feed between full, brief and hidden, and `G` routes the GPS to the newest decision with a place.
+- **First person:** WASD or the arrow keys walk, Shift runs, mouse to look (click to capture the pointer), `]` and `[` change time speed (1x, 2x, 4x, 8x), `T` skips to the next morning, `Esc` pauses, `F1` hides the HUD, `F5` saves, `F9` loads. `F` by a car gets in (W/S throttle and brake or reverse, A/D steer, Space handbrake, V switches chase and driver view) and `F` again gets out once it slows down. The car is solid: it bounces off walls, scrapes along them at a glance, shoves the cars it hits (they slide off, then pull back into their lane) and sends bins, benches, planters and other light street props flying. `B` opens the build phone: `1`-`6` pick road, homes, shops, industry, a building (mouse wheel picks which) or bulldoze, left click places on the tile ahead (roads and zones take a start and an end click), right click undoes the start. Each order is paid by the district that owns the land, as if its mayor had ordered it, and one of your two building crews builds it in real time (see Staged construction). The phone says how many crews are free and how long the order takes, a card under the top bar counts down your orders, and `E` on a worker gets a word about the job. The AI activity feed (top right) shows each mayor turn, council ruling, Chaos Director pick, grid order and Gazette front page as it lands. A card shows who decided, the model they run on, whether the answer came live, from a replay, from a fallback or from the offline planner, what they did and why. On foot the mayors take their turns spread over the day. A decision with a place raises a light beacon there. `J` cycles the feed between full, brief and hidden, and `G` routes the GPS to the newest decision with a place.
 
 The orbit view (`GRIDFALL_VIEW=orbit`):
 

data/feature_flags.json

@@ -15,6 +15,7 @@
      "phone": {"default": true, "description": "First-person feature: B opens the phone Build app, which places roads, zones and buildings for the mayor who owns the land."},
     "activity": {"default": true, "description": "First-person feature: AI activity feed, decision beacons and map pings showing which mayor or agent decided what, on which model, from which source, and where; mayors take staggered turns through the day on foot. J cycles the feed, G routes to the newest decision."},
     "crews": {"default": true, "description": "First-person feature: the player's two building crews. Phone orders are built in real time (2-5 minutes for a building) by crews you can watch on site, with a board and a HUD card counting down; later orders queue for a free crew."},
+    "props": {"default": true, "description": "First-person feature: street props the player's car knocks over. Bins, benches, planters, mailboxes, bike racks and parking meters hit hard enough tumble off, come to rest and can be hit again; they stand up again out of sight. Slower hits and lamps, trees, bollards and hydrants hold like walls."},
     "gmi_live": {"default": true, "description": "Kill switch for live GMI Cloud calls. Off: every call uses the replay cache or heuristics, as with GRIDFALL_OFFLINE=1."},
     "analytics": {"default": false, "description": "Local product analytics to user://ops/analytics.jsonl (also GRIDFALL_ANALYTICS=1). Nothing is sent anywhere."},
     "error_tracking": {"default": false, "description": "Write contextual error records to user://ops/errors.jsonl (also GRIDFALL_ERROR_LOG=1). In-memory error counters are always on."},