Rename FABRIC series: FABRIC.md->0, FABRIC-2.md->1, FABRIC-3.md->2, FABRIC-4.md unchanged

FABRIC.md -> FABRIC-0.md
FABRIC-2.md -> FABRIC-1.md
FABRIC-3.md -> FABRIC-2.md (the current/living document)
FABRIC-4.md unchanged (new #3 to follow separately)

Every cross-reference repo-wide updated to match, including doc-comment
citations inside kernel source (.c/.h) files -- done via an ordered
placeholder substitution (FABRIC-3.md->placeholder2, FABRIC-2.md->
placeholder1, FABRIC.md->placeholder0, then placeholders resolved to
final names) in a single pass per file to avoid double-shifting
already-renamed references.

One line in capsules/font.4th grew past the 64-char block-format limit
as a side effect of the longer filename; shortened it and reverified
with mkcapsule --lint (34/34 pass) before rebuilding.

Verified 3-arch boot to ok> (amd64/aarch64/riscv64, each in the
foreground) after the fix; logs and DoE CSVs from this session's
verification runs included per this repo's own audit-artifact
convention.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019YcT3H2PQeyujrzjqS3Var

src/word_source/include/framebuffer_words.h

@@ -17,7 +17,7 @@
  * @{
  *
  * @brief Raw hardware-boundary FORTH words for the Console drawing fabric
- * (FABRIC.md item 4.3.3). Deliberately raster-native -- no Cartesian
+ * (FABRIC-0.md item 4.3.3). Deliberately raster-native -- no Cartesian
  * awareness, no policy. That lives in capsules/fabric.4th instead, per the
  * compose-in-FORTH-first rule.
  *

src/word_source/include/keyboard_words.h

@@ -17,9 +17,9 @@
  * @{
  *
  * @brief Raw hardware-boundary FORTH word for verifying the interrupt-driven
- * keyboard path (FABRIC.md item 4.3.5). Deliberately a diagnostic peek at
+ * keyboard path (FABRIC-0.md item 4.3.5). Deliberately a diagnostic peek at
  * the raw scancode ring buffer -- no set-2 translation, no REPL wiring.
- * Those belong to the later REPL keyboard-input work noted in FABRIC.md.
+ * Those belong to the later REPL keyboard-input work noted in FABRIC-0.md.
  *
  * Kernel-only, amd64-only today (i8042 is amd64 hardware); no-op elsewhere
  * so dictionary parity across all three architectures is unaffected.
@@ -52,7 +52,7 @@
  * on; KBD-SCAN/VKBD-EVENT remain as lower-level per-device diagnostics.
  *
  * @par ALT+TAB ( -- )
- * FABRIC.md item 4.4y-revised. Programmatic equivalent of the physical
+ * FABRIC-0.md item 4.4y-revised. Programmatic equivalent of the physical
  * Alt+TAB graphics/text toggle -- calls the same state-machine transition
  * (console_fb_toggle_graphics() / vt100_toggle_graphics()) the keyboard
  * interception in repl.c uses, so there is exactly one place the toggle
@@ -63,7 +63,7 @@
 void register_keyboard_words(VM *vm);
 
 /**
- * FABRIC.md item 4.4v: shared C-level poll, one converged event stream
+ * FABRIC-0.md item 4.4v: shared C-level poll, one converged event stream
  * (Linux input keycode namespace, all three architectures) -- see
  * KEY-EVENT's doc comment above for the full per-arch translation
  * rationale. Used by both kbw_key_event() (the FORTH word) and the REPL

src/word_source/include/scroll_words.h

@@ -17,7 +17,7 @@
  * @{
  *
  * @brief `SCROLL-BACK`/`SCROLL-FWD`, the REPL scrollback controls
- * (FABRIC.md item 4.4q). Kernel-only; no-op on hosted builds (no
+ * (FABRIC-0.md item 4.4q). Kernel-only; no-op on hosted builds (no
  * framebuffer console there).
  *
  * @par SCROLL-BACK ( n -- )

src/word_source/include/ttf_words.h

@@ -16,7 +16,7 @@
  * @defgroup ttf_words TrueType Text Words
  * @{
  *
- * @brief `TTF-TEXT`, the TrueType-backed text entry point (FABRIC.md item
+ * @brief `TTF-TEXT`, the TrueType-backed text entry point (FABRIC-0.md item
  * 4.3.7e). Kernel-only; no-op on hosted builds (no framebuffer/capsule
  * system exists there).
  *