feat: custom lang highlight, images dir, width bump, first post

- Wire up Ergon and ArchASM custom highlight.js languages
- Serve /content/images/ for post image embeds
- Blog width 820px -> 1040px to match landing page
- First real blog post: "Why make a blog?"

👾 Generated with [Letta Code](https://letta.com)

Co-Authored-By: Letta Code <noreply@letta.com>

src/lang/archasm.js

@@ -0,0 +1,76 @@
+hljs.registerLanguage('archasm', function(hljs) {
+  return {
+    name: 'ArchASM',
+    aliases: ['archasm'],
+
+    keywords: {
+      keyword: `
+        NOP HALT
+        PRINT PRINT_TOP
+        JMP JZ JNZ
+        ENTER LEAVE LGET LSET
+        BEGIN_TICK END_TICK
+        SAVE_GRID LOAD_GRID LOAD_ONT
+        PUSH_INT PUSH_FLOAT PUSH_BOOL PUSH_SYM
+        PACK_VALUE
+        UNPACK_VALUE_INT UNPACK_VALUE_FLOAT
+        UNPACK_VALUE_BOOL UNPACK_VALUE_SYM
+        IADD ISUB ADD SUB MUL DIV IMUL IDIV
+        EQ LT NOT
+        SWAP OVER ROT NROT DUP2 NIP TUCK
+        POP DUP
+        CREATE_NODE CREATE_EDGE
+        DELETE_NODE DELETE_EDGE
+        SET_NODE_PROPERTY GET_NODE_PROPERTY
+        UNSET_NODE_PROPERTY
+        SET_EDGE_PROPERTY GET_EDGE_PROPERTY
+        UNSET_EDGE_PROPERTY
+        ADD_INCIDENT_NODE REMOVE_INCIDENT_NODE
+        SET_INCIDENCE
+        FIND_INCIDENTS
+        GET_NODE_TYPE GET_EDGE_TYPE
+        GET_EDGE_ARITY GET_EDGE_NODE_AT
+        TRY_GET_NODE_PROPERTY
+        TRY_GET_EDGE_PROPERTY
+        GET_TIMELINE GET_ORIGIN_TICK
+        IS_MAIN GET_CURRENT_TICK
+        PUSH_VIEW POP_VIEW
+        EMIT_CLAIM EMIT_EDGE_CLAIM
+        CALL RET
+        ITER_EDGES_BY_TYPE
+        ITER_NODES_BY_TYPE
+        ITER_INCIDENT_EDGES
+        ITER_PROP_EQ
+        ITER_NEXT
+        ITER_EDGE_ROLE_NODES
+      `,
+      type: 'int float bool string'
+    },
+
+    contains: [
+      {
+        scope: 'comment',
+        begin: /\bNOTE\b/,
+        end: '$'
+      },
+
+      {
+        scope: 'meta',
+        begin: /^(SYMBOL)\b/
+      },
+
+      {
+        scope: 'symbol',
+        match: /^[A-Za-z_][A-Za-z0-9_]*:/
+      },
+
+      hljs.QUOTE_STRING_MODE,
+      hljs.NUMBER_MODE,
+
+      {
+        scope: 'operator',
+        match: /=/
+      }
+    ]
+  };
+});

src/lang/ergon.js

@@ -0,0 +1,71 @@
+hljs.registerLanguage('ergon', function(hljs) {
+  return {
+    name: 'Ergon',
+    aliases: ['ergon', 'agont'],
+
+    keywords: {
+      keyword: `
+        DECLARE TYPE EDGE RULE FUNCTION PROPERTY AXIOMATIC
+        PARAMS RETURNS
+        BEGIN_TICK END_TICK
+        LET SET CREATE PRINT
+        LOOP OVER DO END
+        IF THEN ELSE
+        RETURN CALL
+        SAVE GRID LOAD VM LOCAL
+        BRANCH SWITCH MAIN EXPORT PRUNE LIST DIFF
+        FIND GET ADD REMOVE
+        CONDITION EXPECTS CHANGED UNLESS AS
+        FOR INFER
+        FIELD REQUIRED OPTIONAL ROLE
+        WHERE
+        IS OF IN TO FROM WITH
+        INCIDENT TARGET BASELINE
+        AT TICK
+        PROP BY ID
+        NODE NODES EDGE EDGES
+        WEIGHT PRIORITY
+        LOGICAL STATEFUL WEIGHTED
+
+        AND OR NOT
+      `,
+
+      type: 'string int float bool void',
+
+      literal: 'TRUE FALSE',
+
+      built_in: '@timeline @is_main @origin_tick @current_tick'
+    },
+
+    contains: [
+      {
+        scope: 'comment',
+        begin: /\bNOTE\b/,
+        end: '$'
+      },
+
+      hljs.QUOTE_STRING_MODE,
+      hljs.NUMBER_MODE,
+
+      {
+        scope: 'variable',
+        match: /\b[A-Z][A-Z0-9_]*\b/
+      },
+
+      {
+        scope: 'title',
+        match: /\b[a-z][a-zA-Z0-9_]*\b/
+      },
+
+      {
+        scope: 'built_in',
+        match: /@(timeline|is_main|origin_tick|current_tick)\b/
+      },
+
+      {
+        scope: 'operator',
+        match: /!=|<=|>=|=|<|>|\+|-|\*|\//
+      }
+    ]
+  };
+});