feat(v4.0.0): SEE, a disassembler written in FORTH

- capsule/tools.fth: SEE as FORTH source the node compiles itself.  v4
  code is native, so it shows each instruction word of a definition: the
  opcodes by name, literals' values, the names of the words called or
  jumped to, and text compiled by ." S" and ABORT" as text.  A data word
  shows what it holds; an immediate word says so.
- quit.v4: the three string run-time words get names, compile-only, so
  that SEE can tell text from code.
- tests/test_host_quit.c: definitions with literals, text, IF and loops;
  the capsule's own words; SEE shown by SEE.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/v4.0.0/DECOMPOSITION.md

@@ -732,7 +732,7 @@ it, `xt + 1`; for any other word the parameter field is the code itself.
 | `BYE` `REBOOT` | HERA |  |
 | `SAVE-SYSTEM` | HERA | Snapshot becomes a capsule-image request. |
 | `WORDS` `VLIST` | CC | Source in `v4/capsule/system.v4`. The names in the dictionary, the newest first, a blank after each, a new line whenever one has passed column 64; a definition under way is not shown. v3 prints a heading, eight names to a line and a total. Executed on the golden model's host node (2026-10-04). |
-| `SEE` | CC |  |
+| `SEE` | CC | FORTH source, `v4/capsule/tools.fth`, compiled by the node. v4 code is native, so `SEE xxx` is a disassembler: the name, then each instruction word on a line — the opcodes by name, a literal's value after its `@p`, and after a call or a branch the name of the word it goes to, or the address if that is not a word. Text compiled by `."`, `S"` or `ABORT"` is shown in quotes after its call (the three run-time words `(.")` `(S")` `(ABORT")` have names for this, and are compile-only). Padding is not shown. It stops at the first `;`, `ex` or `jump` that no earlier branch goes past. A data word shows what it holds; an immediate word says so. v3's `SEE` lists the words of threaded code, which v4 has not got. Executed on the golden model's host node (2026-10-05), on definitions with literals, text, `IF` and loops, on the capsule's own words, and on itself. |
 | `PAGE` | DEV | As v3 on a terminal: `ESC [2J ESC [H`. Source in `v4/capsule/system.v4`; executed on the golden model's host node (2026-10-05). |
 | `79-STANDARD` | CC | FORTH-79: executes if a FORTH-79 system is there. It is, so nothing happens. v3's prints two lines and leaves a flag, which the standard does not have. |
 
@@ -760,7 +760,7 @@ call would bury what it works on. A **compile-only** word may not be executed by
 `v4/capsule/forth.v4` holds the first words of the vocabulary flagged this way (`DUP`, `+`, `>R`, `I`,
 `LEAVE`, `@`, the in-line variables and so on).
 
-**The vocabulary at the prompt.** The host node's capsule is `v4/capsule/`, loaded in this order: `core.v4` (bytes, console, strings the rest rest on), `input.v4`, `dict.v4`, `codegen.v4`, `compile.v4`, `quit.v4` (the prompt, faults and errors), `forth.v4` (stack, arithmetic, division, `DEPTH` `PICK` `ROLL`), `numout.v4` (number output, `.S`), `system.v4` (vocabularies, `WORDS`, `FORGET`), `blocks.v4` (mass storage and `LOAD`), `qmath.v4` (the Q48.16 words of §5.26: `Q.FROM-INT Q.TO-INT Q.1 Q.0 Q.SCALE Q.+ Q.- Q.* Q./ Q.ABS Q.NEG Q.= Q.< Q.> Q.0= Q.MAX Q.MIN Q.EXP Q.SQRT Q.LOG Q.SIN Q.COS Q.PRINT`; `DUMP` is in `numout.v4`) and `words.v4` (the stack, comparison, shift, double, mixed and string words of §5.1–5.9: `2SWAP 2OVER 2ROT 2>R 2R> 2R@ 2@ 2! -! 0<> 0> <> <= >= U< U> ABS MAX MIN WITHIN LSHIFT RSHIFT D- DABS D0= D0< D= D2* D2/ D< DMAX DMIN M+ M- CMOVE> MOVE FILL ERASE BLANK -TRAILING COMPARE SEARCH SCAN SKIP ?TERMINAL TRUE FALSE INVERT NOP`). Each is the definition this document gives; `tests/test_host_quit.c` runs them from the prompt against transcripts of the v3 binary. From the prompt, 122 results of the Q words printed by `Q.PRINT` — which shows all sixteen bits of a fraction — are digit for digit v3's, at both cell widths. Under D-18, `Q./` by zero and `Q.SQRT` and `Q.LOG` outside their domain leave the result D-11 and D-12 give and then raise an error (codes 11 `Division by zero` and 12 `Argument out of range`); v3 returns 0 and says nothing. As v3, `LSHIFT` and `RSHIFT` with a count that is negative or as large as the cell is wide are an error (D-18, code 9, `Shift count out of range`). `M+`, like `M-` and `M/MOD`, takes its double in the standard order, low cell first; v3 takes it low cell on top.
+**The vocabulary at the prompt.** The host node's capsule is `v4/capsule/`, loaded in this order: `core.v4` (bytes, console, strings the rest rest on), `input.v4`, `dict.v4`, `codegen.v4`, `compile.v4`, `quit.v4` (the prompt, faults and errors), `forth.v4` (stack, arithmetic, division, `DEPTH` `PICK` `ROLL`), `numout.v4` (number output, `.S`), `system.v4` (vocabularies, `WORDS`, `FORGET`, `COLD`, `DEFER`), then the two files of FORTH source the node compiles itself, `editor.fth` and `tools.fth` (`SEE`); `blocks.v4` (mass storage and `LOAD`), `qmath.v4` (the Q48.16 words of §5.26: `Q.FROM-INT Q.TO-INT Q.1 Q.0 Q.SCALE Q.+ Q.- Q.* Q./ Q.ABS Q.NEG Q.= Q.< Q.> Q.0= Q.MAX Q.MIN Q.EXP Q.SQRT Q.LOG Q.SIN Q.COS Q.PRINT`; `DUMP` is in `numout.v4`) and `words.v4` (the stack, comparison, shift, double, mixed and string words of §5.1–5.9: `2SWAP 2OVER 2ROT 2>R 2R> 2R@ 2@ 2! -! 0<> 0> <> <= >= U< U> ABS MAX MIN WITHIN LSHIFT RSHIFT D- DABS D0= D0< D= D2* D2/ D< DMAX DMIN M+ M- CMOVE> MOVE FILL ERASE BLANK -TRAILING COMPARE SEARCH SCAN SKIP ?TERMINAL TRUE FALSE INVERT NOP`). Each is the definition this document gives; `tests/test_host_quit.c` runs them from the prompt against transcripts of the v3 binary. From the prompt, 122 results of the Q words printed by `Q.PRINT` — which shows all sixteen bits of a fraction — are digit for digit v3's, at both cell widths. Under D-18, `Q./` by zero and `Q.SQRT` and `Q.LOG` outside their domain leave the result D-11 and D-12 give and then raise an error (codes 11 `Division by zero` and 12 `Argument out of range`); v3 returns 0 and says nothing. As v3, `LSHIFT` and `RSHIFT` with a count that is negative or as large as the cell is wide are an error (D-18, code 9, `Shift count out of range`). `M+`, like `M-` and `M/MOD`, takes its double in the standard order, low cell first; v3 takes it low cell on top.
 
 **The stacks and the compiler.** The interpreter and compiler run on the same stacks as the user's
 words, with the user's values beneath them. The capsule was written for stacks of ten cells and nine