feat: add fixed electricity prediction with time window support (#930)

Add a fixed electricity prediction that supports prices per time window.
The time windows may flexible be defined by day or date.

The prediction documentation is updated to also cover the ElecPriceFixed
provider.

The feature includes several changes that are not directly related to the
electricity price prediction implementation but are necessary to keep
EOS running properly and to test and document the changes.

* feat: add value time windows

    Add time windows with an associated float value.

* feat: harden eos measurements endpoints error detection and reporting

    Cover more errors that may be raised during endpoint access. Report the
    errors including trace information to ease debugging.

* feat: extend server configuration to cover all arguments

    Make the argument controlled options also available in server configuration.

* fix: eos config configuration by cli arguments

    Move the command line argument handling to config eos so that it is
    excuted whenever eos config is rebuild or reset.

* chore: extend measurement endpoint system test

* chore: refactor time windows

    Move time windows to configabc as they are only used in configurations.
    Also move all tests to test_configabc.

* chore: provide config update errors in eosdash with summarized error text

    If there is an update error provide the error text as a summary. On click
    provide the full error text.

* chore: force eosdash ip address and port in makefile dev run

    Ensure eosdash ip address and port are correctly set for development runs.

Signed-off-by: Bobby Noelte <b0661n0e17e@gmail.com>

src/akkudoktoreos/server/dash/components.py

@@ -1,4 +1,5 @@
 import json
+import re
 from typing import Any, Callable, Optional, Union
 
 from fasthtml.common import H1, Button, Div, Li, Select
@@ -165,6 +166,44 @@ def ConfigButton(*c: Any, cls: Optional[Union[str, tuple]] = None, **kwargs: Any
     return Button(*c, submit=False, **kwargs)
 
 
+def UpdateError(error_text: str) -> Alert:
+    """Renders a compact error with collapsible full detail.
+
+    Extracts the short pydantic validation message (text after
+    'validation error for ...') as the summary. Falls back to
+    the first line if no match is found.
+
+    Args:
+        error_text: The full error string from a config update failure.
+
+    Returns:
+        Alert: A collapsible error element with error styling.
+    """
+    short = None
+    match = re.search(r"validation error for [^\n]+\n([^\n]+)\n\s+([^\[]+)", error_text)
+    if match:
+        short = f"Validation error: {match.group(1).strip()}: {match.group(2).strip()}"
+    if not short:
+        short = error_text.splitlines()[0].strip()
+
+    return Alert(
+        Details(
+            Summary(
+                DivLAligned(
+                    UkIcon("triangle-alert"),
+                    P(short, cls="text-sm ml-2"),
+                ),
+                cls="list-none cursor-pointer",
+            ),
+            Pre(
+                Code(error_text, cls="language-python"),
+                cls="rounded-lg bg-muted p-3 mt-2 max-h-[30vh] overflow-y-auto overflow-x-hidden whitespace-pre-wrap text-xs",
+            ),
+        ),
+        cls=AlertT.error,
+    )
+
+
 def make_config_update_form() -> Callable[[str, str], Grid]:
     """Factory for a form that sets a single configuration value.
 
@@ -456,6 +495,199 @@ def make_config_update_map_form(
     return ConfigUpdateMapForm
 
 
+def make_config_update_time_windows_windows_form(
+    value_description: Optional[str] = None,
+) -> Callable[[str, str], Grid]:
+    """Factory for a form that edits the windows field of a TimeWindowSequence.
+
+    Args:
+        value_description: If given, a numeric value field is included in the form
+            and shown in the column header (e.g. "electricity_price_kwh [Amt/kWh]").
+            If None, no value field is rendered.
+    """
+
+    def ConfigUpdateTimeWindowsWindowsForm(config_name: str, value: str) -> Grid:
+        config_id = config_name.lower().replace(".", "-")
+
+        try:
+            parsed = json.loads(value)
+            current_windows: list[dict] = parsed if isinstance(parsed, list) else []
+        except (json.JSONDecodeError, AttributeError):
+            current_windows = []
+
+        DOW_LABELS = [
+            "0 – Monday",
+            "1 – Tuesday",
+            "2 – Wednesday",
+            "3 – Thursday",
+            "4 – Friday",
+            "5 – Saturday",
+            "6 – Sunday",
+        ]
+
+        # ---- Existing windows rows ----
+        window_rows = []
+        for idx, win in enumerate(current_windows):
+            start_time = win.get("start_time", "")
+            duration = win.get("duration", "")
+            dow = win.get("day_of_week")
+            date_val = win.get("date")
+            locale_val = win.get("locale")
+
+            dow_str = f"  dow={dow}" if dow is not None else ""
+            date_str = f"  date={date_val}" if date_val else ""
+            locale_str = f"  locale={locale_val}" if locale_val else ""
+
+            if value_description is not None:
+                val = win.get("value", "")
+                val_str = f"  |  {val} {value_description}"
+            else:
+                val_str = ""
+
+            label = f"{start_time}  |  {duration}{val_str}{dow_str}{date_str}{locale_str}"
+
+            remaining = [w for i, w in enumerate(current_windows) if i != idx]
+            remaining_json = json.dumps(json.dumps(remaining))
+            window_rows.append(
+                DivHStacked(
+                    ConfigButton(
+                        UkIcon("trash-2"),
+                        hx_put=request_url_for("/eosdash/configuration"),
+                        hx_target="#page-content",
+                        hx_swap="innerHTML",
+                        hx_vals=f'js:{{ action: "update", key: "{config_name}", value: {remaining_json} }}',
+                        cls="px-2 py-1",
+                    ),
+                    P(label, cls="ml-2 text-sm font-mono"),
+                )
+            )
+
+        # ---- Column headers and inputs ----
+        num_cols = 5 + (1 if value_description is not None else 0)
+
+        header_cols = [
+            P("start_time *", cls="text-xs text-muted-foreground font-semibold"),
+            P("duration *", cls="text-xs text-muted-foreground font-semibold"),
+        ]
+        input_cols = [
+            Input(
+                placeholder="e.g. 08:00 Europe/Berlin",
+                name=f"{config_id}_tw_start_time",
+                cls="border rounded px-2 py-1 text-sm",
+            ),
+            Input(
+                placeholder="e.g. 8 hours",
+                name=f"{config_id}_tw_duration",
+                cls="border rounded px-2 py-1 text-sm",
+            ),
+        ]
+
+        if value_description is not None:
+            header_cols.append(
+                P(f"{value_description} *", cls="text-xs text-muted-foreground font-semibold")
+            )
+            input_cols.append(
+                Input(
+                    placeholder="e.g. 0.288",
+                    name=f"{config_id}_tw_value",
+                    type="number",
+                    step="0.001",
+                    cls="border rounded px-2 py-1 text-sm",
+                )
+            )
+
+        header_cols += [
+            P("day_of_week", cls="text-xs text-muted-foreground font-semibold"),
+            P("date (YYYY-MM-DD)", cls="text-xs text-muted-foreground font-semibold"),
+            P("locale", cls="text-xs text-muted-foreground font-semibold"),
+        ]
+        input_cols += [
+            Select(
+                Option("— any day —", value="", selected=True),
+                *[Option(lbl, value=str(i)) for i, lbl in enumerate(DOW_LABELS)],
+                name=f"{config_id}_tw_dow",
+                cls="border rounded px-2 py-1 text-sm",
+            ),
+            Input(
+                placeholder="e.g. 2025-12-24",
+                name=f"{config_id}_tw_date",
+                cls="border rounded px-2 py-1 text-sm",
+            ),
+            Input(
+                placeholder="e.g. de",
+                name=f"{config_id}_tw_locale",
+                cls="border rounded px-2 py-1 text-sm",
+            ),
+        ]
+
+        # ---- JS for Add button ----
+        current_json = json.dumps(json.dumps(current_windows))
+        if value_description is not None:
+            val_js_read = f"const val = parseFloat(document.querySelector(\"[name='{config_id}_tw_value']\").value);"
+            val_js_guard = "isNaN(val)"
+            val_js_field = "value: val,"
+        else:
+            val_js_read = ""
+            val_js_guard = "false"
+            val_js_field = ""
+
+        add_section = Grid(
+            Grid(*header_cols, cols=num_cols),
+            Grid(*input_cols, cols=num_cols),
+            ConfigButton(
+                UkIcon("plus"),
+                " Add window",
+                hx_put=request_url_for("/eosdash/configuration"),
+                hx_target="#page-content",
+                hx_swap="innerHTML",
+                hx_vals=f"""js:{{
+                    action: "update",
+                    key: "{config_name}",
+                    value: (() => {{
+                        const start  = document.querySelector("[name='{config_id}_tw_start_time']").value.trim();
+                        const dur    = document.querySelector("[name='{config_id}_tw_duration']").value.trim();
+                        {val_js_read}
+                        const dowRaw = document.querySelector("[name='{config_id}_tw_dow']").value;
+                        const date   = document.querySelector("[name='{config_id}_tw_date']").value.trim();
+                        const locale = document.querySelector("[name='{config_id}_tw_locale']").value.trim();
+                        if (!start || !dur || {val_js_guard}) return {current_json};
+                        const newWin = {{
+                            start_time: start,
+                            duration: dur,
+                            {val_js_field}
+                            day_of_week: dowRaw !== "" ? parseInt(dowRaw) : null,
+                            date:        date   !== "" ? date             : null,
+                            locale:      locale !== "" ? locale           : null,
+                        }};
+                        const existing = {json.dumps(current_windows)};
+                        existing.push(newWin);
+                        return JSON.stringify(existing);
+                    }})()
+                }}""",
+            ),
+            cols=1,
+            cls="gap-2 mt-2",
+        )
+
+        return Grid(
+            DivRAligned(P("update time windows")),
+            Grid(
+                *window_rows,
+                P("Add new window", cls="text-sm font-semibold mt-3 mb-1"),
+                P(
+                    "* required  |  day_of_week: overridden by date if both set",
+                    cls="text-xs text-muted-foreground mb-1",
+                ),
+                add_section,
+                cols=1,
+                cls="gap-1",
+            ),
+            id=f"{config_id}-update-time-windows-windows-form",
+        )
+
+    return ConfigUpdateTimeWindowsWindowsForm
+
+
 def ConfigCard(
     config_name: str,
     config_type: str,
@@ -548,7 +780,7 @@ def ConfigCard(
             # Last error
             Grid(
                 DivRAligned(P("update error")),
-                TextView(update_error),
+                UpdateError(update_error),
             )
             if update_error
             else None,