feat(D214): keyboard rebinding via [Bind] config section

port/src/input.c: 12 gameplay actions (Forward/Back/StrafeLeft/StrafeRight/
TurnLeft/TurnRight/Fire/Aim/Action/Cancel/LeanLeft/Start), each bound to a
comma-separated list of up to 4 SDL scancode names via Input.Bind.* keys.
inputRebuildBinds() parses them in inputInit() after configLoad();
SDL_GetScancodeFromName resolves names, unknowns warn + skip. The hardcoded
keyDown(ks, SDL_SCANCODE_*) block in inputComputePad is replaced with
actHeld(ks, IA_*). Mouse buttons (fire/aim) stay hardwired.

File-driven, no UI -- matches the PD port. A fresh ge007.ini gets the full
[Bind] block with defaults visible.

Defaults reproduce the previous FPS layout exactly: all 20 default key names
round-trip to the identical SDL_Scancode the old code used (0 mismatches in a
SDL_GetScancodeFromName test). Build clean; verify.sh dam/facility/bunker1
PASS crash-free.

findings.md D214 + index; QOL-INVENTORY row marked done.

docs/dev/QOL-INVENTORY.md

@@ -28,7 +28,7 @@ ScreenShakeIntensity. Debug: FrameDump, InputLog.
 
 | Feature | PD location | Class | Effort | Notes / priority |
 |---|---|---|---|---|
-| **Key rebinding** (config-string binds per controller/action) | `input.c:69,627-675,1548` (`bindStrs`, `inputParseBindString`) | P | M | **High.** Explicit Phase 4 debt ("rebinding UI" — note PD has *no* UI either; config-file driven). Port-only in `port/src/input.c`. |
+| **Key rebinding** _(DONE M-83, D214)_ | `port/src/input.c` `[Bind]` section | P | M | Keyboard only, 12 actions, `Input.Bind.* = Key,Key` (SDL scancode names), file-driven like PD. Defaults = prior FPS layout (verified). Per-controller pad rebinding + a UI still open. |
 | **SkipIntro** | `main.c:139` (STAGE_TITLE → STAGE_CITRAINING) | P | S | **High.** GE analogue: stage-override path already exists (`boss.c:385-393`, `g_StageNum = LEVELID_TITLE` at :98); wire a flag + arg. 10-min check on what feeds `tokenFindLevel`. |
 | **DisplayFPS** _(DONE M-83, D213)_ | config `Video.DisplayFPS` | P | S | Top-right readout, config-only; ~0.5 s sample window. |
 | **Anisotropic filtering** _(DONE M-83, D212)_ | `Video.Anisotropy` (1–16, dflt 4) | P | S | fast3d already had the GL hook + a hardcoded 4×; M-83 exposed it as config. MipmapFilter / TextureFilter2D still not surfaced. |

docs/dev/findings-index.csv

@@ -56,6 +56,7 @@ D184,PARTIAL,F10 port-layer options overlay —,"LANDED, port-only, no #ifdef PO
 D211,PARTIAL,"PC FOV slider — Video.FovScale (M-83 QoL wave, port-only, WIDESCREEN-FOV-PLAN.md Phase 4).","LANDED, port-only, no #ifdef PORT."
 D212,PARTIAL,Anisotropic-filtering config wiring —,"LANDED, port-only. Build clean."
 D213,PARTIAL,On-screen FPS readout —,"LANDED, port-only. Build clean; bunker1 no-op confirmed."
+D214,PARTIAL,"Keyboard rebinding — [Bind] config section (M-83, port-only, PD parity, Phase 4 debt).","LANDED, port-only, no #ifdef PORT."
 D85,OPEN,room primary/secondary DL → texLoadFromGdl garbage,"OPEN (safety-netted; widen/pool fixes landed, geometry now renders)"
 D86 · D87,RESOLVED,modelInitRwData truncated ptr · attract-demo BE ramromfilestructure,resolved
 D88.4,RESOLVED,propDefs polymorphic record stream not byteswapped → setupDoor crash,resolved (d88_propdefs.py); layout audit M-20 → D132

docs/dev/findings.md

@@ -430,6 +430,7 @@ covers D24–D69; the log continues in §H (D32 procedure, D70–D121).
 | D211 | **PC FOV slider — `Video.FovScale` (M-83 QoL wave, port-only, `WIDESCREEN-FOV-PLAN.md` Phase 4).** fast3d applies a multiplicative half-angle scale to every *perspective* projection matrix as it is loaded (`gfx_apply_fov_scale()` in `gfx_pc.cpp gfx_sp_matrix`, on the `G_MTX_PROJECTION | G_MTX_LOAD` path only — GE always reloads its view projection via `guPerspectiveF` at `fr.c:725`, so a relative `G_MTX_MUL` onto an already-scaled matrix cannot compound). Columns 0 and 1 are scaled by the same factor `tan(half_orig)/tan(half_adj)` → H and V FOV widen uniformly, aspect ratio exactly preserved (no stretch), and because the game rewrites fovy every frame for aim-zoom the scale composes with zoom for free. Ortho matrices (`P[3][3]==1`) are left untouched so HUD/menu 2D is unaffected. `Video.FovScale` = percent of the original vertical FOV, 50–150, **default 100 ⇒ `g_fov_scale == 1.0f` ⇒ guarded early-return, zero FP ops on the matrix ⇒ golden dumps byte-identical**. F10 overlay row "FOV scale %". Math checked offline (`s=1.25 → fovy 60°→75°`, aspect held at 1.3333). | **LANDED, port-only, no `#ifdef PORT`.** Build clean; `bunker1` framediff worst_cell 12.219 vs 12.221 baseline (= render noise, no-op confirmed). **Owed:** an interactive eyeball at FovScale ≠ 100 (world widens, HUD unmoved, aim-zoom still composes). |
 | D212 | **Anisotropic-filtering config wiring — `Video.Anisotropy` (M-83 QoL wave, port-only).** The fast3d GL backend already implemented `set_anisotropy_level` / `get_max_anisotropy_level` and applied `GL_TEXTURE_MAX_ANISOTROPY` on mipmapped tiles with a hardcoded `current_anisotropy_level = 4`; there was no way to configure it. Added the `gfx_set_anisotropy_level()` extern-C wrapper in `gfx_pc.cpp` (clamps to `[1, GL max]`, `reset_texture_state()` so live changes take), declared in `gfx_api.h`, and `Video.Anisotropy` (1–16) in `port/src/video.c` wired through `videoApplyImageOptions()` on init + live-config. **Default 4 = the value fast3d already applied ⇒ no visual delta at defaults.** F10 overlay row "Anisotropic". | **LANDED, port-only.** Build clean. **Owed:** eyeball at 16× on a grazing surface (Depot roof / Dam walkway) vs 1×. |
 | D213 | **On-screen FPS readout — `Video.DisplayFPS` (M-83 QoL wave, port-only, PD parity).** `port/src/optionsoverlay.c` samples frame time once per emitted frame (`fpsTick()` via `sysGetMicroseconds()`, ~0.5 s window) and, when enabled, emits a small top-right green "N FPS" DL even while the F10 panel is closed. Config-only knob (kept off the 13-row panel, which is at its documented layout limit — matches PD, whose `DisplayFPS` is also file-only). **Default 0 ⇒ `optionsOverlayEmit()` still returns NULL when the panel is closed ⇒ golden dumps byte-identical.** | **LANDED, port-only.** Build clean; `bunker1` no-op confirmed. **Owed:** eyeball that the counter reads a sane ~30 and doesn't overlap the HUD. |
+| D214 | **Keyboard rebinding — `[Bind]` config section (M-83, port-only, PD parity, Phase 4 debt).** `port/src/input.c` gains 12 gameplay actions (Forward/Back/StrafeLeft/StrafeRight/TurnLeft/TurnRight/Fire/Aim/Action/Cancel/LeanLeft/Start), each a comma-separated list of up to 4 SDL scancode names (`Input.Bind.Forward = W,Up` …). `inputRebuildBinds()` (called from `inputInit()`, after `configLoad()`) parses them via `SDL_GetScancodeFromName`; unknown names log a warning and are skipped. The old hardcoded `keyDown(ks, SDL_SCANCODE_*)` block in `inputComputePad` is replaced by `actHeld(ks, IA_*)`. Mouse buttons (fire = LMB, aim = RMB) stay hardwired; the mouse-wheel weapon-cycle A-pulse is untouched. **Defaults reproduce the previous FPS layout exactly — verified: all 20 default key names round-trip to the identical `SDL_Scancode` the old code used (`SDL_GetScancodeFromName` test, 0 mismatches).** Config-file only (no in-overlay text entry — matches PD, whose rebinding is also file-driven); a fresh `ge007.ini` gets the full `[Bind]` block with the defaults visible. | **LANDED, port-only, no `#ifdef PORT`.** Build clean. Default binds byte-equivalent to the prior mapping (scancode test). **Owed:** interactive check that a *non-default* bind (e.g. `Fire = Left Alt`) actually takes, and that ESC still cancels menus (it's in the default `Cancel` bind + a separate `video.c` path). |
 | D85 | room primary/secondary DL → `texLoadFromGdl` garbage | OPEN (safety-netted; widen/pool fixes landed, geometry now renders) |
 | D86 · D87 | modelInitRwData truncated ptr · attract-demo BE `ramromfilestructure` | resolved |
 | D88.1–D88.3 · D88.5–D88.6 | `Usetup*Z` header + sub-table width/endian conversion (`d88_emit.py`) | resolved |