fix: expand language IDs, fix AtCoder submit, normalize logging (#353)

## Problem

Language version coverage was incomplete across all platforms, AtCoder
submit used a stale cookie fast-path that caused silent failures, and
raw
`vim.notify` calls throughout the codebase produced inconsistent or
missing `[cp.nvim]:` prefixes.

## Solution

Remove cookie persistence from AtCoder login/submit (always fresh
login),
increase the submit nav timeout to 40s, and switch to in-memory buffer
upload with the correct per-language extension from a full
`_LANGUAGE_ID_EXTENSION`
map covering all 116 AtCoder languages. Expand `LANGUAGE_VERSIONS` in
`constants.lua` with all AtCoder languages, 15 new CF languages with
full
version variants, and 50+ Kattis languages. Fix AtCoder `prolog` ID
(`6079`→`6081`, was Pony) and remove the non-existent `racket` entry.
Replace all raw `vim.notify` calls with `logger.log`. Simplify the
submit
language doc to point at `constants.lua` rather than maintaining a
static table.

scrapers/language_ids.py

@@ -4,10 +4,60 @@ LANGUAGE_IDS = {
         "python": "6082",
         "java": "6056",
         "rust": "6088",
+        "c": "6014",
+        "go": "6051",
+        "haskell": "6052",
+        "csharp": "6015",
+        "kotlin": "6062",
+        "ruby": "6087",
+        "javascript": "6059",
+        "typescript": "6100",
+        "scala": "6090",
+        "ocaml": "6073",
+        "dart": "6033",
+        "elixir": "6038",
+        "erlang": "6041",
+        "fsharp": "6042",
+        "swift": "6095",
+        "zig": "6111",
+        "nim": "6072",
+        "lua": "6067",
+        "perl": "6076",
+        "php": "6077",
+        "pascal": "6075",
+        "crystal": "6028",
+        "d": "6030",
+        "julia": "6114",
+        "r": "6084",
+        "commonlisp": "6027",
+        "scheme": "6092",
+        "clojure": "6022",
+        "ada": "6002",
+        "bash": "6008",
+        "fortran": "6047",
+        "gleam": "6049",
+        "lean": "6065",
+        "vala": "6106",
+        "v": "6105",
     },
     "codeforces": {
         "cpp": "89",
         "python": "70",
+        "java": "87",
+        "kotlin": "99",
+        "rust": "75",
+        "go": "32",
+        "csharp": "96",
+        "haskell": "12",
+        "javascript": "55",
+        "ruby": "67",
+        "scala": "20",
+        "ocaml": "19",
+        "d": "28",
+        "perl": "13",
+        "php": "6",
+        "pascal": "4",
+        "fsharp": "97",
     },
     "cses": {
         "cpp": "C++17",
@@ -25,6 +75,55 @@ LANGUAGE_IDS = {
         "python": "Python 3",
         "java": "Java",
         "rust": "Rust",
+        "ada": "Ada",
+        "algol60": "Algol 60",
+        "algol68": "Algol 68",
+        "apl": "APL",
+        "bash": "Bash",
+        "bcpl": "BCPL",
+        "bqn": "BQN",
+        "c": "C",
+        "cobol": "COBOL",
+        "commonlisp": "Common Lisp",
+        "crystal": "Crystal",
+        "csharp": "C#",
+        "d": "D",
+        "dart": "Dart",
+        "elixir": "Elixir",
+        "erlang": "Erlang",
+        "forth": "Forth",
+        "fortran": "Fortran",
+        "fortran77": "Fortran 77",
+        "fsharp": "F#",
+        "gerbil": "Gerbil",
+        "go": "Go",
+        "haskell": "Haskell",
+        "icon": "Icon",
+        "javascript": "JavaScript (Node.js)",
+        "julia": "Julia",
+        "kotlin": "Kotlin",
+        "lua": "Lua",
+        "modula2": "Modula-2",
+        "nim": "Nim",
+        "objectivec": "Objective-C",
+        "ocaml": "OCaml",
+        "octave": "Octave",
+        "odin": "Odin",
+        "pascal": "Pascal",
+        "perl": "Perl",
+        "php": "PHP",
+        "pli": "PL/I",
+        "prolog": "Prolog",
+        "racket": "Racket",
+        "ruby": "Ruby",
+        "scala": "Scala",
+        "simula": "Simula 67",
+        "smalltalk": "Smalltalk",
+        "snobol": "SNOBOL",
+        "swift": "Swift",
+        "typescript": "TypeScript",
+        "visualbasic": "Visual Basic",
+        "zig": "Zig",
     },
     "codechef": {
         "cpp": "C++",