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

include/starkernel/ttf.h

@@ -23,12 +23,12 @@
 /**
  * ttf.h - TrueType font parser core (Freestanding)
  *
- * FABRIC.md item 4.3.7. Reads a TTF's sfnt directory plus head/maxp/loca/
+ * FABRIC-0.md item 4.3.7. Reads a TTF's sfnt directory plus head/maxp/loca/
  * glyf/cmap tables, resolving a Unicode codepoint to a glyph index and its
  * outline header (contour count, bounding box). Does NOT extract outline
  * points or rasterize — that is 4.3.7a/4.3.7c. No floating point; all
  * fields read here are raw integers straight from the font's own
- * big-endian on-disk format (see FABRIC.md §27.7 decision #2 for why the
+ * big-endian on-disk format (see FABRIC-0.md §27.7 decision #2 for why the
  * Q48.16-vs-float call was made, and why it doesn't bind this file, which
  * never scales anything).
  *
@@ -95,7 +95,7 @@ typedef struct {
     int has_cmap;
 
     /* hhea/hmtx, for ttf_glyph_advance_width() -- proportional spacing
-     * (FABRIC.md item 4.3.7e). Mandatory tables per the TrueType spec,
+     * (FABRIC-0.md item 4.3.7e). Mandatory tables per the TrueType spec,
      * so their absence fails ttf_parse() same as head/maxp/loca/glyf. */
     uint32_t hmtx_off;
     uint16_t num_h_metrics;
@@ -215,7 +215,7 @@ typedef struct {
 /**
  * ttf_rasterize_glyph - Flatten a glyph's outline (quadratic Bezier
  * contours, fixed segment count per curve — see ttf.c's file header
- * comment) and fill it into `out` using the even-odd rule (FABRIC.md item
+ * comment) and fill it into `out` using the even-odd rule (FABRIC-0.md item
  * 4.3.7c; see that item's completion note for why even-odd rather than
  * nonzero winding — correct for the v1 glyph repertoire's non-self-
  * intersecting nested contours, not necessarily for an arbitrary font).
@@ -237,7 +237,7 @@ int ttf_rasterize_glyph(const ttf_font_t *font, uint32_t glyph_index,
                          q48_16_t scale, q48_16_t origin_x, q48_16_t origin_y,
                          uint8_t fill_value, ttf_bitmap_t *out);
 
-/* Glyph raster cache (FABRIC.md item 4.3.7d). Fixed-size, caller-owned
+/* Glyph raster cache (FABRIC-0.md item 4.3.7d). Fixed-size, caller-owned
  * slot array -- no allocation, same convention as the rest of this
  * module. Every cached bitmap is a fixed TTF_CACHE_BITMAP_DIM square,
  * rasterized with the fixed origin (TTF_CACHE_MARGIN,
@@ -293,10 +293,10 @@ int ttf_raster_cache_get(ttf_raster_cache_t *cache, const ttf_font_t *font,
 
 /**
  * ttf_load_from_capsule - Resolve a font capsule by name and parse it,
- * zero-copy (FABRIC.md item 4.3.7b). `out` borrows the capsule payload
+ * zero-copy (FABRIC-0.md item 4.3.7b). `out` borrows the capsule payload
  * directly from `arena` — no kmalloc, no decode step, since the capsule
  * is already a raw-byte match of the source `.ttf` (see
- * capsules/fonts/README.md and FABRIC.md §27.7's 2026-08-10 correction:
+ * capsules/fonts/README.md and FABRIC-0.md §27.7's 2026-08-10 correction:
  * capsule storage needs no hex/base64 text-encoding, `tools/mkcapsule.c`
  * already embeds arbitrary files as raw bytes). Validates the capsule's
  * content hash (`capsule_validate(..., verify_hash=1)`) before parsing.