Rename 9harness to 9agents; README, file-backed qids, worded errors

- 9harness/ becomes 9agents/ (build option -D9agents, package paths).
- 9agents serves /README, reports qid paths from the file's (dev, ino)
  and qid versions that move with the file, and names its refusals.

1 files changed, 2 insertions, 2 deletions

diff --git a/build.zig.zon b/build.zig.zon
index d042fe3..b275168 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -7,11 +7,11 @@
     // published package cannot build: build.zig @imports each program's
     // build fragment unconditionally, so a program missing from this
     // list is a FileNotFound for every consumer, while building fine
-    // from a checkout. 9harness was exactly that until a pardes build
+    // from a checkout. 9agents was exactly that until a pardes build
     // caught it.
     .paths = .{
         "build.zig",     "build.zig.zon", "src",   "web",
         "test",          "docs",          "README.md",
-        "9ns",           "9proc",         "9harness",
+        "9ns",           "9proc",         "9agents",
     },
 }