docs: record the settings spike and the Forerunner 70 benchmark

Spike (2026-10-21, Android): 8000 characters per field and 64,000 in
total arrive; URIs with & save; the mixed special-character string is
refused, so the test strings now split it into one group each plus a
fake Aegis export. Benchmark: SHA-1 TOTP 18 ms, SHA-512 732 ms, PBKDF2
2,000 iterations per second.

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

11 files changed, 78 insertions, 0 deletions

diff --git a/spike/settings/test-strings/aegis-json.txt b/spike/settings/test-strings/aegis-json.txt
new file mode 100644
index 0000000..82b54f2
--- /dev/null
+++ b/spike/settings/test-strings/aegis-json.txt
@@ -0,0 +1,5 @@
+# Author:  cirakg & claude ai
+# Summary: Settings spike test string: fake unencrypted Aegis export.
+# Copy ONLY the last line (the test string) into a settings field.
+
+{"version":1,"header":{"slots":null,"params":null},"db":{"version":3,"entries":[{"type":"totp","uuid":"00000000-0000-4000-8000-000000000001","name":"alice@example.com","issuer":"TestOne","note":"","icon":null,"info":{"secret":"JBSWY3DPEHPK3PXP","algo":"SHA1","digits":6,"period":30}}]}}
diff --git a/spike/settings/test-strings/c-1-percent.txt b/spike/settings/test-strings/c-1-percent.txt
new file mode 100644
index 0000000..b41a582
--- /dev/null
+++ b/spike/settings/test-strings/c-1-percent.txt
@@ -0,0 +1,5 @@
+# Author:  cirakg & claude ai
+# Summary: Settings spike test string: C1: percent.
+# Copy ONLY the last line (the test string) into a settings field.
+
+C1 % 100% END
diff --git a/spike/settings/test-strings/c-2-angle.txt b/spike/settings/test-strings/c-2-angle.txt
new file mode 100644
index 0000000..3b55be6
--- /dev/null
+++ b/spike/settings/test-strings/c-2-angle.txt
@@ -0,0 +1,5 @@
+# Author:  cirakg & claude ai
+# Summary: Settings spike test string: C2: angle brackets.
+# Copy ONLY the last line (the test string) into a settings field.
+
+C2 < > <b> END
diff --git a/spike/settings/test-strings/c-3-backslash.txt b/spike/settings/test-strings/c-3-backslash.txt
new file mode 100644
index 0000000..d1a2c06
--- /dev/null
+++ b/spike/settings/test-strings/c-3-backslash.txt
@@ -0,0 +1,5 @@
+# Author:  cirakg & claude ai
+# Summary: Settings spike test string: C3: backslash.
+# Copy ONLY the last line (the test string) into a settings field.
+
+C3 \ a\/b END
diff --git a/spike/settings/test-strings/c-4-quote.txt b/spike/settings/test-strings/c-4-quote.txt
new file mode 100644
index 0000000..71c98df
--- /dev/null
+++ b/spike/settings/test-strings/c-4-quote.txt
@@ -0,0 +1,5 @@
+# Author:  cirakg & claude ai
+# Summary: Settings spike test string: C4: double quote.
+# Copy ONLY the last line (the test string) into a settings field.
+
+C4 " "x" END
diff --git a/spike/settings/test-strings/c-5-braces.txt b/spike/settings/test-strings/c-5-braces.txt
new file mode 100644
index 0000000..e529fe8
--- /dev/null
+++ b/spike/settings/test-strings/c-5-braces.txt
@@ -0,0 +1,5 @@
+# Author:  cirakg & claude ai
+# Summary: Settings spike test string: C5: braces.
+# Copy ONLY the last line (the test string) into a settings field.
+
+C5 { } {x} END
diff --git a/spike/settings/test-strings/c-6-latin.txt b/spike/settings/test-strings/c-6-latin.txt
new file mode 100644
index 0000000..d05e7bf
--- /dev/null
+++ b/spike/settings/test-strings/c-6-latin.txt
@@ -0,0 +1,5 @@
+# Author:  cirakg & claude ai
+# Summary: Settings spike test string: C6: accented letters and euro sign.
+# Copy ONLY the last line (the test string) into a settings field.
+
+C6 äöü ß € END
diff --git a/spike/settings/test-strings/c-7-emoji.txt b/spike/settings/test-strings/c-7-emoji.txt
new file mode 100644
index 0000000..ea11b5b
--- /dev/null
+++ b/spike/settings/test-strings/c-7-emoji.txt
@@ -0,0 +1,5 @@
+# Author:  cirakg & claude ai
+# Summary: Settings spike test string: C7: emoji.
+# Copy ONLY the last line (the test string) into a settings field.
+
+C7 😀 END
diff --git a/spike/settings/test-strings/c-8-json.txt b/spike/settings/test-strings/c-8-json.txt
new file mode 100644
index 0000000..b854a91
--- /dev/null
+++ b/spike/settings/test-strings/c-8-json.txt
@@ -0,0 +1,5 @@
+# Author:  cirakg & claude ai
+# Summary: Settings spike test string: C8: JSON fragment.
+# Copy ONLY the last line (the test string) into a settings field.
+
+C8 {"name":"Fake","n":1} END
diff --git a/spike/settings/test-strings/index.html b/spike/settings/test-strings/index.html
index d330b52..243cc6b 100644
--- a/spike/settings/test-strings/index.html
+++ b/spike/settings/test-strings/index.html
@@ -18,6 +18,15 @@ button{font-size:1.1em;padding:6px 16px;margin:4px 0 16px}</style></head>
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onclick="copyText('len-8000')">Copy</button></section>
 <section><h2>special characters</h2><textarea id="special" readonly rows="3">special: &amp; &lt; &gt; \ &quot; { } % | non-ASCII: äöü ß € 😀 | otpauth://totp/Fake:alice?secret=JBSWY3DPEHPK3PXP&amp;issuer=Fake&amp;digits=6 | {&quot;name&quot;:&quot;Fake&quot;,&quot;path&quot;:&quot;a\/b&quot;} END</textarea><button onclick="copyText('special')">Copy</button></section>
+<section><h2>C1: percent</h2><textarea id="c-1-percent" readonly rows="3">C1 % 100% END</textarea><button onclick="copyText('c-1-percent')">Copy</button></section>
+<section><h2>C2: angle brackets</h2><textarea id="c-2-angle" readonly rows="3">C2 &lt; &gt; &lt;b&gt; END</textarea><button onclick="copyText('c-2-angle')">Copy</button></section>
+<section><h2>C3: backslash</h2><textarea id="c-3-backslash" readonly rows="3">C3 \ a\/b END</textarea><button onclick="copyText('c-3-backslash')">Copy</button></section>
+<section><h2>C4: double quote</h2><textarea id="c-4-quote" readonly rows="3">C4 &quot; &quot;x&quot; END</textarea><button onclick="copyText('c-4-quote')">Copy</button></section>
+<section><h2>C5: braces</h2><textarea id="c-5-braces" readonly rows="3">C5 { } {x} END</textarea><button onclick="copyText('c-5-braces')">Copy</button></section>
+<section><h2>C6: accented letters and euro sign</h2><textarea id="c-6-latin" readonly rows="3">C6 äöü ß € END</textarea><button onclick="copyText('c-6-latin')">Copy</button></section>
+<section><h2>C7: emoji</h2><textarea id="c-7-emoji" readonly rows="3">C7 😀 END</textarea><button onclick="copyText('c-7-emoji')">Copy</button></section>
+<section><h2>C8: JSON fragment</h2><textarea id="c-8-json" readonly rows="3">C8 {&quot;name&quot;:&quot;Fake&quot;,&quot;n&quot;:1} END</textarea><button onclick="copyText('c-8-json')">Copy</button></section>
+<section><h2>fake unencrypted Aegis export</h2><textarea id="aegis-json" readonly rows="3">{&quot;version&quot;:1,&quot;header&quot;:{&quot;slots&quot;:null,&quot;params&quot;:null},&quot;db&quot;:{&quot;version&quot;:3,&quot;entries&quot;:[{&quot;type&quot;:&quot;totp&quot;,&quot;uuid&quot;:&quot;00000000-0000-4000-8000-000000000001&quot;,&quot;name&quot;:&quot;alice@example.com&quot;,&quot;issuer&quot;:&quot;TestOne&quot;,&quot;note&quot;:&quot;&quot;,&quot;icon&quot;:null,&quot;info&quot;:{&quot;secret&quot;:&quot;JBSWY3DPEHPK3PXP&quot;,&quot;algo&quot;:&quot;SHA1&quot;,&quot;digits&quot;:6,&quot;period&quot;:30}}]}}</textarea><button onclick="copyText('aegis-json')">Copy</button></section>
 <script>
 function copyText(id) {
   const area = document.getElementById(id);
diff --git a/spike/settings/test-strings/make_test_strings.py b/spike/settings/test-strings/make_test_strings.py
index 8d43977..9632220 100644
--- a/spike/settings/test-strings/make_test_strings.py
+++ b/spike/settings/test-strings/make_test_strings.py
@@ -14,6 +14,11 @@ used, so the length tests don't also test character handling.
 special.txt holds the characters that may be rejected (& < > \\ " { } %),
 non-ASCII text, a fake otpauth URI and a JSON fragment.
 
+The phone refused to save special.txt (spike run 2026-10-21), so the c-*.txt
+strings split it into one character group each, and aegis-json.txt is a
+complete fake unencrypted Aegis export: together they show which characters
+block saving and whether an Aegis file can be pasted at all.
+
 Usage: python3 make_test_strings.py   (writes into its own folder)
 """
 
@@ -28,6 +33,23 @@ SPECIAL = (
     "otpauth://totp/Fake:alice?secret=JBSWY3DPEHPK3PXP&issuer=Fake&digits=6 | "
     '{"name":"Fake","path":"a\\/b"} END'
 )
+# Test C, split: (file name, label, string). Each ends with " END".
+SPLIT = (
+    ("c-1-percent", "C1: percent", "C1 % 100% END"),
+    ("c-2-angle", "C2: angle brackets", "C2 < > <b> END"),
+    ("c-3-backslash", "C3: backslash", "C3 \\ a\\/b END"),
+    ("c-4-quote", "C4: double quote", 'C4 " "x" END'),
+    ("c-5-braces", "C5: braces", "C5 { } {x} END"),
+    ("c-6-latin", "C6: accented letters and euro sign", "C6 äöü ß € END"),
+    ("c-7-emoji", "C7: emoji", "C7 😀 END"),
+    ("c-8-json", "C8: JSON fragment", 'C8 {"name":"Fake","n":1} END'),
+)
+AEGIS_JSON = (
+    '{"version":1,"header":{"slots":null,"params":null},"db":{"version":3,"entries":['
+    '{"type":"totp","uuid":"00000000-0000-4000-8000-000000000001","name":"alice@example.com",'
+    '"issuer":"TestOne","note":"","icon":null,"info":{"secret":"JBSWY3DPEHPK3PXP",'
+    '"algo":"SHA1","digits":6,"period":30}}]}}'
+)
 HEADER = (
     "# Author:  cirakg & claude ai\n# Summary: {summary}\n"
     "# Copy ONLY the last line (the test string) into a settings field.\n\n"
@@ -55,6 +77,8 @@ def main() -> None:
     here = Path(__file__).resolve().parent
     entries = [(f"len-{n:04d}", f"{n} characters", marker_string(n)) for n in LENGTHS]
     entries.append(("special", "special characters", SPECIAL))
+    entries.extend(SPLIT)
+    entries.append(("aegis-json", "fake unencrypted Aegis export", AEGIS_JSON))
     for name, label, value in entries:
         (here / f"{name}.txt").write_text(HEADER.format(summary=f"Settings spike test string: {label}.") + value + "\n")
     cards = "\n".join(