Initial commit: offline flight planner (Rust, PFPX-class)

Clean-room reproduction of PFPX: route generation + IFPS validation + OFP.
Independent design — official ICAO/EUROCONTROL data only (RAD, FRA points,
IFPUV oracle); no community FPL sources.

Workspace crates: core (routing/discover/rad/navdata/perf/export),
cli, server, rad (Annex parser), gui (Tauri v2 + React + MapLibre).
Route discovery: oracle-in-the-loop repair against Eurocontrol IFPUV.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

crates/core/tests/fixtures/CIFP/EGLL.dat

@@ -0,0 +1,2 @@
+RWY:RW09L,     ,      ,00079, ,   ,3,   ;N51285200,W000273600,0000;
+RWY:RW27R,     ,      ,00078, ,   ,3,   ;N51284900,W000260900,0000;

crates/core/tests/fixtures/CIFP/LFPG.dat

@@ -0,0 +1,2 @@
+RWY:RW08L,     ,      ,00338, ,GLE ,3,   ;N48594447,E002330988,0000;
+RWY:RW26R,     ,      ,00318, ,GAU ,3,   ;N48595395,E002360724,1725;

crates/core/tests/fixtures/earth_awy.dat

@@ -0,0 +1,8 @@
+I
+1100 Version - test fixture, not real navdata
+
+ABEAM LF 11 BEACN LF 11 N 1  35 245 T100
+BEACN LF 11 CROSS LF 11 N 1  35 245 T100
+CROSS LF 11 DOVER EG 11 N 2 245 460 U200
+DOVER EG 11 ENTRY EG 11 N 2 245 460 U200
+99

crates/core/tests/fixtures/earth_fix.dat

@@ -0,0 +1,9 @@
+I
+1101 Version - test fixture, not real navdata
+
+ 49.000000000    2.500000000  ABEAM ENRT LF 1000001
+ 49.500000000    2.000000000  BEACN ENRT LF 1000002
+ 50.000000000    1.000000000  CROSS ENRT LF 1000003
+ 50.500000000    0.000000000  DOVER ENRT EG 1000004
+ 51.000000000   -0.500000000  ENTRY ENRT EG 1000005
+99

crates/core/tests/fixtures/earth_nav.dat

@@ -0,0 +1,7 @@
+I
+1150 Version - test fixture, not real navdata
+
+ 3  49.010000000    2.600000000      300    11400   130      1.000  PGV ENRT LF PARIS VOR
+ 2  50.900000000   -0.400000000      100     3700    50      0.000  EGN ENRT EG ENTRY NDB
+ 4  49.000000000    2.550000000       50    11000    25      0.000  ILP ENRT LF PARIS ILS
+99